The standard reduction potentials for Cu 2+ / Cu and Cu 2+ / Cu +are 0.337 and 0.153 V respectively. The standard electrode potential of Cu + / Cu half-cell is

Question

The standard reduction potentials for Cu 2+ / Cu and Cu 2+ / Cu +are 0.337 and 0.153 V respectively. The standard electrode potential of Cu + / Cu half-cell is (A) 0.184V (B) 0.827V (C) 0.521V (D) 0.490V

Tardigrade Admin · Accepted Answer

Δ G=-n F E° For, Cu 2++2 e- longrightarrow Cu ; Δ G1°=-2 F(0.337) ldots (i) Cu 2++e- longrightarrow Cu + ; Δ G2°=-F(0.153) ldots (ii) Subtracting (ii) from (i) Cu ++e- longrightarrow Cu Δ G°=-0.674 F+0.153 F -n F E°=-0.521 F ∵ For (III) n=1, ∴ E°=0.521 V

Q. The standard reduction potentials for Cu2+/Cu and Cu2+/Cu+are 0.337 and 0.153V respectively. The standard electrode potential of Cu+/Cu half-cell is

0.184V

0.827V

0.521V

0.490V

ΔG=−nFE∘ For, Cu2++2e−⟶Cu;ΔG1∘​=−2F(0.337)… (i) Cu2++e−⟶Cu+;ΔG2∘​=−F(0.153)… (ii) Subtracting (ii) from (i) Cu++e−⟶Cu ΔG∘=−0.674F+0.153F −nFE∘=−0.521F ∵ For (III) n=1, ∴E∘=0.521V

Q. The standard reduction potentials for $C u^{2 +} / C u$ and $C u^{2 +} / C u^{+}$ are $0.337$ and $0.153 V$ respectively. The standard electrode potential of $C u^{+} / C u$ half-cell is