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Equilibrium constant K of the Daniell cell at 25°C (E° = 1.10 V, n = 2):
A≈ 10²⁰
B≈ 10⁻²
C≈ 10³⁷
D≈ 10²
Answer & Solution
Correct answer: C. ≈ 10³⁷
At equilibrium: log K = nE°/0.0591 = 2 × 1.10/0.0591 ≈ 37.2. So K ≈ 10³⁷, very large. The forward reaction goes essentially to completion.
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