Question

2Hg → Hg²⁺; E° = 0.855 V

Hg → Hg²⁺; E° = 0.799 V

Equilibrium constant for the reaction

Hg + Hg²⁺ ⇌ Hg₂²⁺ at 27° C is:

(a) 89
(b) 82.3
(c) 79
(d) none of these

Answer 1

Correct option is (c) 79

E° for the reaction = 0.855 – 0.799 = 0.056 V