Chapter 7.2, Problem 7.5P

(a)

Interpretation Introduction

Interpretation:

The number of equivalents present in $\text{1}{\text{mole Na}}^{\text{+}}$ has to be given.

Concept Introduction:

An equivalent is the number of moles of charge, which a mole of ion contributes to a solution.  The number of equivalents per mole of an ion equals the charge on the ion.

(b)

Interpretation Introduction

Interpretation:

The number of equivalents present in $\text{1}{\text{mole Mg}}^{\text{2+}}$ has to be given.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The number of equivalents present in $\text{0}\text{.5}{\text{mole K}}^{\text{+}}$ has to be given.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The number of equivalents present in $\text{0}\text{.5}{\text{mole PO}}_{\text{4}}{}^{\text{3-}}$ has to be given.

Concept Introduction:

Refer to part (a).