First slide

Electrolysis

Question

In the reaction of copper with nitric acid,

Easy

A

Cu is oxidised to Cu²⁺ ion by hydrogen ion
B

Cu is oxidised to Cu²⁺ ion by nitrate ion
C

Cu is reduced by hydrogen ion
D

Both (b) and (c )

Solution

In the reaction of Cu with HNO₃, it is nitrate ion not the hydrogen ion, which oxidises Cu.

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