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JEE Main Chemistry question

ChemistryElectrochemistryJEE Main

For the cell \mathrm{Zn\,|\,Zn^{2+}\,||\,Cu^{2+}\,|\,Cu}, if the concentration of and ions is doubled, the e.m.f. of the cell

Answer: (C)

Solution

By the Nernst equation, .

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Question ID VK-143956