Chapter 8, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The number of milliequivalents of ${\text{Na}}^{+}$ ions in $1\text{ L}$ of solution is to be calculated.

Concept introduction:

One equivalent of an ion can be defined as the amount of charge an ion contributes when present in dissolved form. For example, one mole of ${\text{Mg}}^{2+}$ contributes 2 equivalent of ${\text{Mg}}^{2+}$ ions as the charge is $+2$ . Similarly, one mole of ${\text{SO}}_4{}^{2-}$ contributes 2 equivalent of ${\text{SO}}_4{}^{2-}$ ions as the charge is $-2$.

Conversion factors are utilized for the conversion of one unit into another unit.

Interpretation Introduction

(b)

Interpretation:

The number of milliequivalent of ${\text{Na}}^{+}$ ions in $\text{2 L}$ of solution is to be calculated.

Concept introduction:

The concentration of an ion in solution is expressed in equivalents.

One equivalent of an ion can be defined as the amount of charge an ion contributes when present in dissolved form. For example, one mole of ${\text{Mg}}^{2+}$ contributes 2 equivalent of ${\text{Mg}}^{2+}$ ions as the charge is $+2$ . Similarly, one mole of ${\text{SO}}_4{}^{2-}$ contributes 2 equivalent of ${\text{SO}}_4{}^{2-}$ ions as the charge is $-2$.

Conversion factors are utilized for the conversion of one unit into another unit.

Interpretation Introduction

(c)

Interpretation:

The number of milliequivalent of ${\text{Na}}^{+}$ ions in $\text{440 mL}$ of solution is to be calculated.

Concept introduction:

The concentration of an ion in solution is expressed in equivalents.

One equivalent of an ion can be defined as amount of charge an ion contributes when present in dissolved form. For example, one mole of ${\text{Mg}}^{2+}$ contributes 2 equivalent of ${\text{Mg}}^{2+}$ ions as the charge is $+2$.

The conversion factor to convert $\text{mL}$ to $\text{L}$ is given as follows:

  $1\text{ mL}={\text{10}}^{-3}\text{ L}$

Conversion factors are utilized for the conversion of one unit into another unit.