Question

Why is an aqueous solution of $\mathrm{HCl}$ is a good conductor of electricity?

Answer 1

An aqueous solution of $\mathrm{HCl}$ is a good conductor of electricity this is because:

• $\mathrm{HCl}$ is a strong electrolyte and can dissociates completely in an aqueous solution.

$\mathrm{HCl}\left(\mathrm{aq}\right)\rightleftharpoons {\mathrm{H}}^{+}\left(\mathrm{aq}\right)+{\mathrm{Cl}}^{-}\left(\mathrm{aq}\right)$

• After the dissociation, the solution contains free mobile ions which allow the electric current to pass throughout it.

Hence, an aqueous solution of $\mathbf{HCl}$ is a good conductor of electricity.