Chapter 8.5, Problem 8.21P

(a)

Interpretation Introduction

Interpretation:

The $\left[{\text{H}}_{\text{3}}{\text{O}}^{\text{+}}\right]$ of the solution when the $\text{pH}$ of the solution is $\text{10}\text{.2}$ has to be calculated.

Concept Introduction:

Concentration of ${\text{H}}_{\text{3}}{\text{O}}^{\text{+}}$ is antilogarithm of $\text{pH}\text{.}$  The concentration is calculated as,

  $\left[{\text{H}}_{\text{3}}{\text{O}}^{\text{+}}\right]{\text{=10}}^{\text{-pH}}$

(b)

Interpretation Introduction

Interpretation:

The $\left[{\text{H}}_{\text{3}}{\text{O}}^{\text{+}}\right]$ of the solution when the $\text{pH}$ of the solution is $\text{7}\text{.8}$ has to be calculated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The $\left[{\text{H}}_{\text{3}}{\text{O}}^{\text{+}}\right]$ of the solution when the $\text{pH}$ of the solution is $4.3$ has to be calculated.

Concept Introduction:

Refer to part (a).