On the electrolysis of aqueous solution of so | vedclass

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Question

(B) During the electrolysis of an aqueous solution of sodium sulphate $(Na_2SO_4)$,water is reduced at the cathode and oxidized at the anode instead o

Vedclass · Accepted Answer

$H_2$

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(B) During the electrolysis of an aqueous solution of sodium sulphate $(Na_2SO_4)$,water is reduced at the cathode and oxidized at the anode instead of $Na^{+}$ and $SO_4^{2-}$ ions.Cathode reaction: $2H_2O + 2e^- 	o H_2(g) + 2OH^{-}(aq)$Anode reaction: $H_2O(l) 	o 2H^{+}(aq) + \frac{1}{2}O_2(g) + 2e^-$Thus,$H_2$ gas is evolved at the cathode.

On the electrolysis of aqueous solution of sodium sulphate,at the cathode we get:

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