Question

Aqueous solution of which of the following compounds is the best conductor of electric current?

• A. Ammonia, $N{H}_3$
• B. Fructose, $C_6{H}_{12}{O}_6$
• C. Acetic acid, $C_2{H}_4{O}_2$
• D. Hydrochloric acid, $HCl$

Answer 1

The correct option is D Hydrochloric acid, $HCl$

Conductivity of a solution would depend on how many ions are generated if we take the same concentration of all of them.
Fructose does not dissociate into ions in a solution. Ammonia forms a weak base - ammonium hydroxide, acetic acid is a weak acid, both of them do not dissociate completely.
An aqueous solution of $HCl$ is the best conductor of electric current because $HCl$ is a strong acid, and dissociates completely into ions.