Key Idea Gibb's free energy is an additive property. ΔG∘=−nFE∘ For reaction, Cu2++2e−⟶Cu; ΔG∘=−2×F×0.337 For reaction, Cu+⟶Cu2++e−; ΔG∘=+1×F×0.153 Adding Eqs. (i) and (ii), we get Cu++e−⟶Cu;ΔG∘=−0.521ΔG∘=−nFE∘−0.521 F=−nFE∘∴E∘=0.52 V
NEET UG 2009 — Chemistry Physical Chemistry
Given, (i) Cu2++2e−⟶Cu, E∘=0.337 V (ii) Cu2++e−⟶Cu+, E∘=0.153 V Electrode potential, E∘ for the reaction, Cu+e−⟶Cu, will be
Held on 30 Apr 2009 · Verified 9 Jul 2026.
0.52 V
0.90 V
0.30 V
0.38 V
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