Chapter 6, Problem 6I.10E

(a)

Interpretation Introduction

Interpretation:

The sparingly soluble salt of iron(III) hydroxide $\text{pH}$ is $11.0$, and the molar solubility has tobe calculated.

Concept Introduction:

Solubility product:

The equilibrium constant is defined as solubility product and it denoted by the symbol of ${\text{K}}_{\text{sp}}$.  It is expressed by the chemical reaction equilibrium between an ionic solid compound and its ions solubility nature in the solution.

(b)

Interpretation Introduction

Interpretation:

The sparingly soluble salt of iron(III) hydroxide $\text{pH}$ is 3.0, and the molar solubility has to be calculated.

Concept introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The sparingly soluble salt of iron(II) hydroxide $\text{pH}$ is 8.0, and the molar solubility has to be calculated.

Concept introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The sparingly soluble salt of iron(II) hydroxide $\text{pH}$ is 6.0, and the molar solubility has to be calculated.

Concept introduction:

Refer to part (a).