Question

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

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

Answer 1

The correct option is B $\text{Hydrochloric acid},HCl$

Hydrochloric acid $\left(HCl\right)$ is a polar covalent compound which dissociates into ions in aq. solution. Acetic acid is a weak electrolyte. Whereas none of the other compounds dissociate into ions in water. Hence out of the solutions HCl solution will be the best conductor.