Question

Hydrogen peroxide is obtained by the electrolysis of ______.

• A. Water.
• B. Sulphuric acid
• C. Hydrochloric acid
• D. Fused sodium peroxide

Answer 1

Answer: (B)

Sulphuric acid

Answer 2

: $H_{2}O_{2}$is obtained by the electrolysis of a cold 50% solution of $H_{2}SO_{4}$.

$2H_{2}SO_{4} \rightarrow 2H^{+} + 2HSO_{4}^{-}$

& Peroxodisulphate \\ & \downarrow Hydrolysis \end{aligned}}{HO_{3}SOOSO_{3}H_{(aq)}}}$$