Chapter 16.3, Problem 16.5.1PE

Interpretation Introduction

Interpretation:
The value of $\left[{\text{H}}^{+}\right]$ for the given solution is to be determined.

Concept introduction:
The equilibrium constant for the auto-ionization of water is,

$K_{\text{w}}= \left[{\text{H}}^{+}\right]\left[{\text{OH}}^{-}\right]$

The above expression is used to calculate the concentration of ${\text{H}}^{+}$ and ${\text{OH}}^{-}$ .

Given:
The concentration of ${\text{OH}}^{-}$ ions in the solution is $4.0\times {10}^{-8}$ .