Chapter 9, Problem 9.79P

Interpretation Introduction

(a)

Interpretation:

The pH value for $\left[O{H}^{-}\right]={10}^{-2}$ is to be determined.

Concept Introduction:

The formula that will be used −

  $K_w=\left[H_3{O}^{+}\right]\left[O{H}^{-}\right]=1.0\times {10}^{-14}$

  $pH=-\log [H_3{O}^{+}]$

Interpretation Introduction

(b)

Interpretation:

The pH value for $\left[O{H}^{-}\right]=4\times {10}^{-8}$ is to be determined.

Concept Introduction:

The formula that will be used −

  $K_w=\left[H_3{O}^{+}\right]\left[O{H}^{-}\right]=1.0\times {10}^{-14}$

  $pH=-\log [H_3{O}^{+}]$

Interpretation Introduction

(c)

Interpretation:

The pH value for $\left[O{H}^{-}\right]=6.2\times {10}^{-7}$ is to be determined.

Concept Introduction:

The formula that will be used −

  $K_w=\left[H_3{O}^{+}\right]\left[O{H}^{-}\right]=1.0\times {10}^{-14}$

  $pH=-\log [H_3{O}^{+}]$

Interpretation Introduction

(d)

Interpretation:

The pH value for $\left[O{H}^{-}\right]=8.5\times {10}^{-13}$ is to be determined.

Concept Introduction:

The formula that will be used −

  $K_w=\left[H_3{O}^{+}\right]\left[O{H}^{-}\right]=1.0\times {10}^{-14}$

  $pH=-\log [H_3{O}^{+}]$