Q. The correct form of Nernst equation for the cell Zn|Zn²⁺Cu²⁺|Cu is:

सेल Zn|Zn²⁺Cu²⁺|Cu के लिए नर्नस्ट समीकरण का सही रूप है:

E = E° + (RT/2F)ln[Cu²⁺]/[Zn²⁺]

E = E° - (RT/2F)ln[Cu²⁺]/[Zn²⁺]

E = E° + (RT/2F)ln[Zn²⁺]/[Cu²⁺]

E = E° - (RT/2F)ln[Zn²⁺]/[Cu²⁺]

The reaction is:

\text{Zn (s)} + \text{Cu}^{2+} (aq) \rightarrow \text{Zn}^{2+} (aq) + \text{Cu (s)}

Thus:

E = E^\circ - \frac{RT}{nF} \ln\left(\frac{[\text{Zn}^{2+}]}{[\text{Cu}^{2+}]}\right) \quad \text{(n = 2)}

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