(a)Write expressions for the equilibrium constants for the following reactions:
Ni(CO)4 (g) → Ni (s) + 4 CO (g)
2 HgO (s) → 2 Hg (l) + O2 (g)
CH3COOH (aq) → CH3COO- (aq) + H+ (aq)
(b) Formulate these expressions in terms of the degree of dissociation.