Q3 of 45 Page 2

Why does an aqueous solution of an acid conduct electricity?

The presence of hydrogen ions (H+) or hydronium ions (H3O+) in an aqueous solution of acid are responsible for conducting electricity. For example; hydrochloric acid (HCl) dissociates in aqueous solution and gives hydrogen ions [H +(aq)] and chloride ions [Cl-(aq)] which carry electric current. So, due to the presence of these ions, an aqueous solution of hydrochloric acid conducts electricity.

H2O(l)+HCl(l)  → H3O+(aq) +Cl-(aq)


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