Question

Of the following reactions
(i) `ArArrB, DeltaG^(@)=250kjmol^(-1)`
(ii)`DrArrE, DeltaG^(2)= -100kjmol^(-1)`
(iii) `frArrG, Delta^(@)=-150kjmol^(-1)`
(iv) `MrArr N, DeltaG^(@)=150kjmol^(-1)`
reaction with the largest equilibrium constant is
A. I
B. II
C. III
D. IV

Answer 1

Correct Answer - C
`DeltaG^(@)=-2.303RT log_(10)K`
`logK=-(Delta G^(@))/(2.303RT)`
So lower value of `Delta G^(@)` higher will be log K
`FhArr G,DeltaG^(@)=-150kjmol^(-1)` (lowest)