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Write the reaction occurring at anode and cathode and the products of electrolysis of aq KCl.

Class 12th Chemistry, Question -Write the reaction occurring at anode and cathode and the products of electrolysis of aq KCl.

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February 14, 2023

Question 33:Write the reaction occurring at anode and cathode and the products of electrolysis of aq KCl.

The correct answer is – The electrolysis of aqueous KCl produces hydrogen gas at the cathode and chlorine gas at the anode. The overall reaction is:

2H2O(l) + 2e- -> H2(g) + 2OH-(aq) (cathode half-reaction) 2Cl-(aq) -> Cl2(g) + 2e- (anode half-reaction)

The net ionic equation for the electrolysis of aqueous KCl is:

2H2O(l) + 2Cl-(aq) -> H2(g) + Cl2(g) + 2OH-(aq)

So, the products of the electrolysis of aqueous KCl are hydrogen gas and chlorine gas.