   # Use K sp values to decide which compound in each of the following pairs is more soluble (Appendix J.) (a) PbCl 2 or PbBr 2 (b) HgS or FeS (c) Fe(OH) 2 or Zn(OH) 2 ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 17, Problem 55PS
Textbook Problem
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## Use Ksp values to decide which compound in each of the following pairs is more soluble (Appendix J.) (a) PbCl2 or PbBr2 (b) HgS or FeS (c) Fe(OH)2 or Zn(OH)2

(a)

Interpretation Introduction

Interpretation:

Using Ksp value, the salt will be more soluble in each pair has to be decided.

Concept introduction:

The solubility of a salt is defined as the maximum amount of salt that can be dissolved in definite amount of solvent. It is expressed in moles per liter or grams per liter. Solubility in terms of moles per liter is called molar solubility and is defined as the number of moles of solute (salt) dissolved in per liter of solution.

Solubility product constant Ksp is an equilibrium constant and is defined as the product of the equilibrium concentration of the ions of the salt raised to the power of their coefficients in the balanced chemical equation.

The expression for Ksp of a salt is given as,

AxBy(s)xAy+(aq)+yBx(aq)Ksp=[Ay+]x[Bx]y

### Explanation of Solution

Refer to the Appendix J in the textbook for the value of Ksp.

Solubility product constant Ksp for PbCl2 is 1.7×105 and for PbBr2 is 6.6×106

(b)

Interpretation Introduction

Interpretation:

Using Ksp value, the salt will be more soluble in each pair has to be decided.

Concept introduction:

The solubility of a salt is defined as the maximum amount of salt that can be dissolved in definite amount of solvent. It is expressed in moles per liter or grams per liter. Solubility in terms of moles per liter is called molar solubility and is defined as the number of moles of solute (salt) dissolved in per liter of solution.

Solubility product constant Ksp is an equilibrium constant and is defined as the product of the equilibrium concentration of the ions of the salt raised to the power of their coefficients in the balanced chemical equation.

The expression for Ksp of a salt is given as,

AxBy(s)xAy+(aq)+yBx(aq)Ksp=[Ay+]x[Bx]y

(c)

Interpretation Introduction

Interpretation:

Using Ksp value, the salt will be more soluble in each pair has to be decided.

Concept introduction:

The solubility of a salt is defined as the maximum amount of salt that can be dissolved in definite amount of solvent. It is expressed in moles per liter or grams per liter. Solubility in terms of moles per liter is called molar solubility and is defined as the number of moles of solute (salt) dissolved in per liter of solution.

Solubility product constant Ksp is an equilibrium constant and is defined as the product of the equilibrium concentration of the ions of the salt raised to the power of their coefficients in the balanced chemical equation.

The expression for Ksp of a salt is given as,

AxBy(s)xAy+(aq)+yBx(aq)Ksp=[Ay+]x[Bx]y

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