Question

Il Review | Constants Periodic Table A cell has a standard emf of +0.187 V at 298 K. Part A What is the value of the equilibrium constant for the cell reaction if n = 1? Express your answer using two significant figures. O ALQ O ? Submit Request Answer Part B What is the value of the equilibrium constant for the cell reaction if n = 2? Express your answer using two significant figures. V AC MO O ?

Answer 1

Here Standard cell EMF of the reaction, Ecellº= 0.187 v at 298 K 1) We know that relation between standard EMF and equilibrium constant, at 298 K Ecel ° = 0.059 logk , where K = equilibrium constant For the first case n=1, K= 10 Ecell /0.059 K=1.47*10^3 2)For the second case n=2 K = 10^2*Ecell 10.059 K=2.18*10^6 3) For the third case n=3 K = 10^3*Ecell /0.059 K=3.22*10^9