Chapter 18.3, Problem 24PP

Interpretation Introduction

(a)

Interpretation:

$pH$ of the solution is to be found out using given hydrogen ion concentration.

Concept introduction:

pH gives the concentration of hydrogen ion in a solution.

It tells about acidity and basicity of a solution.

It is given by:

$\begin{array}{l}pH=-\log \left[H^{+}\right]\\ \left[H^{+}\right]isconcentationofhydrogenions\end{array}$

Answer to Problem 24PP

pH of given solution is 2.

Explanation of Solution

Given:

$\left[H^{+}\right]=1\times {10}^{-2}M$

$pH=-\log \left[H^{+}\right]$

Therefore,

$\begin{array}{c}pH=-\log (1\times {10}^{-2})\\ =2\end{array}$

Interpretation Introduction

(a)

Interpretation:

$pH$ of the solution is to be found out using given hydrogen ion concentration.

Concept introduction:

pH gives the concentration of hydrogen ion in a solution.

It tells about acidity and basicity of a solution.

It is given by:

$\begin{array}{l}pH=-\log \left[H^{+}\right]\\ \left[H^{+}\right]isconcentationofhydrogenions\end{array}$

Answer to Problem 24PP

pH of given solution is 5.52.

Explanation of Solution

Given:

$\left[H^{+}\right]=3\times {10}^{-6}M$

$pH=-\log \left[H^{+}\right]$

Therefore,

$\begin{array}{c}pH=-\log (3\times {10}^{-6})\\ =-\log 3-\log {10}^{-6}\\ =-0.477+6\\ =5.52\end{array}$