The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained. Concept Introduction: Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO 3 and HCl in the ratio of 1:3 . Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au + 3 . The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl 4 − . The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl 4 ) . A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

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Answer 1

Question

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

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Answer 2

Question

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Expert Solution & Answer

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Answer 3

Question

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Expert Solution & Answer

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Answer 4

Question

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Expert Solution & Answer

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Answer 5

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Answer 6

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Answer 7

Chapter 18, Problem 18.101QP

(a)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The complete balanced equation for the dissolution of gold in aqua regia has to be found and the purpose of the addition of hydrochloric acid to the reaction mixture should be explained.

Concept Introduction:

Dissolution of gold in aqua regia: Aqua regia is the mixture of HNO3 and HCl in the ratio of 1:3. Neither of the acids can dissolve gold individually. But the aqua regia can dissolve gold and platinum. Nitric acid being a power full oxidising agent oxidises a very small amount of Au to Au+3. The formed gold ions later reacts with the chloride ions produced by the HCl and forms AuCl4−. The excess of hydrogen ions present in the solution stabilises the complex ion and also leads to the formation of chloroauric acid (HAuCl4).

A chemical equation is the figurative representation of chemical reaction. In a chemical equation the reactants are in the left side and the products are in the right side. A balanced chemical equation serves as an easy tool for understanding a chemical reaction.

Answer 10

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Answer 12

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Answer 13

Ch. 18.1 - Balance the following equation for the reaction in...Ch. 18.1 - Determine the number of electrons transferred in...Ch. 18.1 - For the following reaction in acidic solution,...Ch. 18.2 - Write the cell diagram for the following redox...Ch. 18.2 - Write the balanced redox reaction corresponding to...Ch. 18.3 - Can Sn reduce Zn2+(aq) under standard-state...Ch. 18.3 - What is the standard emf of a galvanic cell made...Ch. 18.3 - Prob. 1RCF Ch. 18.3 - Prob. 2RCF Ch. 18.4 - Prob. 4PE

Solution Summary: The author explains the complete balanced equation for the dissolution of gold in aqua regia and the purpose of the addition of hydrochloric acid to the reaction mixture.

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Chapter 18 Solutions