Practicing Success
For a cell reaction involving two electron change, the standard EMF of the cell is 0.295 V at 25∘C. What is the equilibrium constant of the reaction at 25∘C? |
29.5 x 10-2 1 x 1010 10 2.95 x 10-10 |
1 x 1010 |
The correct answer is option 2. \(1 \times 10^{10}\) \(E^o_{cell} =\) \(\frac{2.303RT}{nF}\)logKc = \(\frac{0.0591}{n}\) logKc ∴ 0.295 V = \(\frac{0.0591}{2}\) logKc or logKc= \(\frac{0.295 × 2}{0.0591}\) =10 or Kc=1×1010 |