Chapter 8, Problem 78P

Interpretation Introduction

Interpretation:

Why the pure water does not conduct electric current should be explained.

Concept Introduction:

The electric current is conducted by a substance with free ions in the solution. The movement of these ions carry the charge from one place to another resulting electric current conduction. The self ionization recation of water is represented as follows:

${\text{H}}_{\text{2}}\text{O}+{\text{H}}_{\text{2}}\text{O}\underset{}{\rightleftarrows }{\text{H}}_{\text{3}}{\text{O}}^{+}+{\text{OH}}^{-}$.