(a) Interpretation: The balanced equation for the reaction of treatment of finely divided gold with CN - (aq) in the presence of O 2 (g) should be written. Concept introduction: The balanced chemical equation can be written by following a few steps: Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation. Step 2: Counting the number of atoms of each element on either side of the equation. Step 3: Balancing the number of that atom or group on either side which has large atoms in number. Step 4: Using the correct coefficients to balance the number of atoms on both sides.

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Answer 1

Question

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

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(a) In the industrial production of iron, what is the reducing substance loaded into the blast furnace? (b) In addition to fur-nishing the reducing power, what other function does this sub-stance serve? (c) What is the formula of the active reducing agent in the process? (d) Write equations for the stepwise reduc-tion of Fe₂O₃ to iron in the furnace

hydrated CuSO4 is blue in colour. why?

A slag sample is known to contain all of its iron in the forms of FeO and Fe2O3. A sample of 1,000 g of the slag was dissolved in hydrochloric acid according to the usual method, then reduced with stannous chloride and finally titrated with a 0.02237 M solution of potassium permanganate, of which 28.59 mL were used. A second aliquot of the slag sample, weighing 1,500, was dissolved in a nitrogen atmosphere to further adjust the oxidation state of the iron, it was immediately titrated with the same potassium permanganate solution. If this second experiment required 15.60 mL of permanganate solution, calculate: a) The percentage of total iron in the slag. b) The percentages of the oxide FeO and Fe2O3

Answer 2

Question

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

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Answer 3

Question

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

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Answer 4

Question

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

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Answer 5

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Answer 6

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Answer 7

Chapter 20, Problem 7QAP

Interpretation Introduction

(a)

Interpretation:

The balanced equation for the reaction of treatment of finely divided gold with CN^-(aq) in the presence of O₂ (g) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The balanced equation for the reaction of treatment of finely divided zinc metal with solution formed in part (a) should be written.

Concept introduction:

The balanced chemical equation can be written by following a few steps:

Step 1: Writing the correct skeleton and molecular formula for the element or molecules on either side of the equation.

Step 2: Counting the number of atoms of each element on either side of the equation.

Step 3: Balancing the number of that atom or group on either side which has large atoms in number.

Step 4: Using the correct coefficients to balance the number of atoms on both sides.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 20 - Write a balanced equation to represent the...Ch. 20 - Write a balanced equation to represent the...Ch. 20 - Write a balanced equation to represent (a) the...Ch. 20 - Prob. 4QAP Ch. 20 - Prob. 5QAP Ch. 20 - Prob. 6QAP Ch. 20 - Prob. 7QAP Ch. 20 - Prob. 8QAP Ch. 20 - Prob. 9QAP Ch. 20 - Zinc is produced by electrolytic refining. The...

Solution Summary: The author explains the steps of writing the balanced chemical equation for the reaction of treatment of finely divided gold with CN - in the presence of O 2 (g).

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Chapter 20 Solutions