In the electrolysis of acidulated water, _______ gas is evolved at anode.

hydrogen

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oxygen

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nitrogen

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hydrogen sulphide

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Solution

The correct option is B
oxygen

In the electrolysis of acidulated water, oxygen gas is evolved at anode.

OH^- being negatively charged, moves towards the anode (positively charged electrode).

Reaction at the anode,

OH^- - e^- → OH

OH + OH → H₂O + O

O + O → O₂

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In the electrolysis of acidulated water, _______ gas is evolved at cathode.

During electrolysis of acidulated water, which gas is collected at cathode and which gas is collected at anode?

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