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Question

What happens when a nickle rod is dipped into a copper sulphate solution? Justify your answer. [E0Ni+2/Ni=0.25v and E0Cu+2/Cu=+0.34v].

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Solution

Red copper metal starts precipitating. This is because E0Ni+2/Ni is less than E0Cu+2/Cu. So, Ni displace Cu+2 ions from the solution. Nimetal+Cu+2(aqu)Ni+2(aqu)+Cumetal.

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