(a) Interpretation: The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated. Concept introduction: Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

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Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

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Experiment: Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below. Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization. Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C Sample C-Cool the third sample in an ice-bath to 0-2 °C Results: weight after recrystalization and melting point temp. A=0.624g,102-115° B=0.765g, 80-105° C=1.135g, 77-108 What is the percent yield of A,B, and C.

Answer 2

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Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

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Answer 3

Question

Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

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Answer 4

Question

Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

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Answer 5

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Answer 6

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Answer 7

Chapter 9, Problem 5E

Interpretation Introduction

(a)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The conservation of mass law using the molar masses of reactants and products for each substance for the given reaction is to be illustrated.

Concept introduction:

Chemical reactions are represented by chemical equations. In a chemical equation the reactants are represented on the left of the arrow while the products are represented on the right of the arrow. Stoichiometric coefficient is the number preceding each symbol in a reaction which determines the moles of the reactants and products in the reaction. The ratio of moles is termed as mole ratio. It is stated by law of conservation of mass that, “during any chemical reaction, the mass of product must be equal to mass of the reactants”.

Answer 10

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Answer 13

Ch. 9 - Prob. 1CE Ch. 9 - Prob. 2CE Ch. 9 - Prob. 3CE Ch. 9 - Prob. 4CE Ch. 9 - Prob. 5CE Ch. 9 - Prob. 6CE Ch. 9 - Prob. 7CE Ch. 9 - Prob. 8CE Ch. 9 - Prob. 9CE Ch. 9 - Prob. 10CE

Solution Summary: The author illustrates the conservation of mass law using the molar masses of reactants and products for each substance for the given reaction.

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