It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction . Concept introduction: Oxidation: Losing electrons, increasing oxidation number. Reduction: Gaining electron, decreasing oxidation number. Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away. Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized. Rules for assigning oxidation number 1. The oxidation number of the atom of an uncombined element is zero. 2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species. 3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1. 4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in O F 2 where it is +2.

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Answer 1

Question

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

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Answer 2

Question

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

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Answer 3

Question

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

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Answer 4

Question

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

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Answer 5

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 6

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 7

Chapter 5, Problem 5.50AP

(a)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of an oxidizing agent increases or decreases in a redox reaction.

Concept introduction:

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 8

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 9

(b)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a reducing agent increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 10

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 11

(c)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing oxidation increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 12

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

Answer 13

(d)

Interpretation Introduction

Interpretation: It should be determined that whether the oxidation number of a substance undergoing reduction increases or decreases in a redox reaction.

Concept introduction:

The number of electrons an atom tends to give up or gain in a chemical reaction is called oxidation number.

Oxidation: Losing electrons, increasing oxidation number.

Reduction: Gaining electron, decreasing oxidation number.

Oxidizing agent is a substance that removes electrons from another reactant in a chemical reaction and so it is reduced by taking electron onto itself and the reactant is oxidized by having its electron taken away.

Reducing agent is the element or compound in a redox reaction that donate an electron to another species and so it is oxidized.

Rules for assigning oxidation number

1. The oxidation number of the atom of an uncombined element is zero.

2. The sum of the oxidation numbers of all atoms in a compound must equal to the total charge on the species.

3. Hydrogen has an oxidation number of +1 unless it is combined with metals, in which case it has an oxidation number of -1.

4. Oxygen has an oxidation number of -2, except in peroxides where it is -1 and in OF2 where it is +2.

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Answer 17

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Solution Summary: The author explains that the oxidation number of an oxydizing agent increases or decreases in a redox reaction.

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