Question

The same quantity of electricity is passed through $H_{2}S{O}_4$ and $HCl$ solutions of the same concentration. The amount of hydrogen liberated from $H_{2}S{O}_4$ as compared to that from $HCl$ is:

• A. the same
• B. twice as such
• C. one half as such
• D. dependent on concentration.

Answer 1

The correct option is A the same

The reaction taking place at cathode for electrolysis of $H_2{SO}_4$ and $HCl$,

${2H}^{+}+2e^{-}\to H_2\to HCl$

${2H}^{+}+2e^{-}\to H_2\to H_2{SO}_4$

Hence, if same quantity of electricity is passed same amount of hydrogen is evolved.