Chapter U4.18, Problem 8E

Interpretation Introduction

Interpretation:

The reason for a solution of 0.10 M HCl to be a better conductor of electricity than 0.10 M CH₃COOH must be explained with drawing.

Concept introduction:

HCl is a strong acid and CH₃COOH is a weak acid.

Answer to Problem 8E

The sketch of two solutions is shown below depicting ions and molecules.

Here, red dots represent H+ ions, black dots represent Cl- ions, green dots represent acetate ions and sky blue dots represent undissociated acetic acid molecules.

Explanation of Solution

From the sketch it is clear that in HCl there is complete dissociation, whereas in acetic acid there are very few molecules of acetic acid which undergoes dissociations. Most of the molecules of acetic acids are undissociated. Thus,number of ions is less in acetic acid. So 0.10 M HCl is a better conductor of electricity.