NEET levelSingle correct optionDifficulty 1 of 3ec063
A cell reaction with n=1 has Ecell∘=0.1182V at 298 K. Taking F2.303RT=0.0591V, the equilibrium constant of the reaction is
A100
B10
C2
D1000
Answer: A
At equilibrium E=0, so the Nernst equation gives E∘=n0.0591logK, i.e. logK=0.0591nE∘=0.05911×0.1182=2. Hence K=102=100. Option C gives logK instead of K.