Question

equilibrium constant of: O2(g)+2H2O(l)+2Sn2+(aq)→4OH−(aq)+2Sn4+(aq)

Answer 1

Equilibrium constant of a reaction is the ratio of the product of the concentration of the products in equilibrium over the product of the concentration of the reactants in equilibrium. For this case,

K = [OH]^4 [Sn4+]^2 / [O2] [H2O]^2[Sn2+]^2