Which of the following electrolyte can be used to obtain $\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8$ by the…

Which of the following electrolyte can be used to obtain $\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8$ by the process of electrolysis?
  1. Dilute solution of sodium sulphate.
  2. Acidified dilute solution of sodium sulphate.
  3. Dilute solution of sulphuric acid
  4. Concentrated solution of sulphuric acid

Solution

Theory based.
At anode :
$2 \mathrm{HSO}_4^{-} \rightarrow \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8+2 \mathrm{e}^{-}$

Asked in: JEE Main 2025 (22 Jan Shift 1)

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