Chapter 15, Problem 46E

Write an equilibrium expression for each chemical equation involving one or more solid or liquid reactants or products.

a. ${\text{HCHO}}_2(aq)+{\text{H}}_{\text{2}}\text{O}(l)\rightleftharpoons {\text{H}}_{\text{3}}{\text{O}}^{\text{+}}(aq)+{\text{CHO}}_2{}^{-}(aq)$

b. ${\text{CO}}_3^{2-}(aq)+{\text{H}}_{\text{2}}\text{O}(l)\rightleftharpoons {\text{HCO}}_3{}^{-}(aq)+{\text{OH}}^{-}(aq)$

c. $2\text{C}(s)+{\text{CO}}_2(g)\rightleftharpoons 2\text{CO}(g)$

d. $\text{C}(s)+{\text{CO}}_2(g)\rightleftharpoons 2\text{CO}(g)$