Assertion : In the Daniell cell, if concentrations of $Cu^{2 +}$ and $Zn^{2 +}$ ions are doubled, the emf of the cell will be doubled.
Reason : If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.

Question

Assertion : In the Daniell cell, if concentrations of $Cu^{2 +}$ and $Zn^{2 +}$ ions are doubled, the emf of the cell will be doubled.

Reason : If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.

TestHub · Accepted Answer

Doubling the concentration of Cu²⁺ and Zn²⁺ does not double the EMF of the Daniell cell because EMF depends on the ratio of concentrations (Nernst equation).
Hence assertion is false but reason is true.

Chemistry - Electrochemistry Question with Solution | TestHub

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