Chapter 15.3, Problem 15.3WE

Write equilibrium expressions for each of the following reactions.

(a) ${\text{CaCO}}_{\text{3}}(s)\rightleftarrows \text{CaO(}s{\text{) + CO}}_{\text{2}}(g)$

(b) $\text{H}g(l)+{\text{Hg}}^{\text{2+}}(aq)\rightleftarrows {\text{Hg}}_2^{2+}(aq)$

(c) $2\text{Fe}(s)+3{\text{H}}_2\text{O(}l\text{) }\rightleftarrows {\text{ Fe}}_{\text{2}}{\text{O}}_{\text{3}}(s)+2{\text{H}}_2(g)$

(d) ${\text{O}}_2(g)+2{\text{H}}_2(g)\rightleftarrows 2{\text{H}}_2\text{O}(l)$