(a) Interpretation: A balanced chemical equation for preparation of F 2 from HF needs to be determined. Concept introduction: The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

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Answer 1

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Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

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Answer 2

Question

Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

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Answer 3

Question

Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

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Answer 4

Question

Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

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Answer 5

Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

Answer 6

Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Answer 7

Chapter 21, Problem 21QAP

Interpretation Introduction

(a)

Interpretation:

A balanced chemical equation for preparation of F2 from HF needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. The F atom is most electronegative in nature, it forms a weak acid with hydrogen.

Answer 8

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Answer 9

Interpretation Introduction

(b)

Interpretation:

A balanced chemical equation for preparation of Br2 from NaBr needs to be determined.

Concept introduction:

The group-17 of the periodic table is also called as halogens. They are most reactive and most electronegative non-metals. The reactivity and electronegativity of elements decreases down in the group. In other words; in displacement reactions, a more reactive halogen can displace a less reactive halogen to form product. For example, chlorine can displace bromine from its solution but vice-versa is not possible. The reactivity order for halogens is:

F2 > Cl2 > Br2 > I2

Answer 10

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

Answer 11

Interpretation Introduction

(c)

Interpretation:

A balanced chemical equation for preparation of NH4+ from NH3 needs to be determined.

Concept introduction:

Ammonia NH3 can act as a base in aqueous solution this is due to the presence of lone pair of electrons on N atom.

A species can act as a base if it accepts hydrogen ion from the solution or donate hydroxide ion.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 21 - Prob. 1QAP Ch. 21 - Prob. 2QAP Ch. 21 - Prob. 3QAP Ch. 21 - Prob. 4QAP Ch. 21 - Prob. 5QAP Ch. 21 - Prob. 6QAP Ch. 21 - Give the formula for the acidic oxide of (a) HNO3...Ch. 21 - Prob. 8QAP Ch. 21 - Write the formulas of the following compounds. (a)...Ch. 21 - Prob. 10QAP

Solution Summary: The author explains that the group-17 of the periodic table is also called as halogens. They are most reactive and electronegative non-metals.

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Chapter 21 Solutions