Textbook Problem

Exercise 17.2 Write the equilibrium expression for eh of the following reactions.
a. ${\text{2KClO}}_{\text{3}}\left(s\right)\rightleftharpoons 2\text{KCl}\left(s\right)+3{\text{O}}_2\left(g\right)$   This reaction is often used to produce oxygen gas in the laboratory.
b. ${\text{NH}}_{\text{4}}{\text{NO}}_3\left(s\right)\rightleftharpoons {\text{N}}_2\text{O}\left(g\right)+{\text{2H}}_{\text{2}}\text{O}\left(g\right)$   c. ${\text{CO}}_{\text{2}}\left(g\right)+\text{MgO}\left(s\right)\rightleftharpoons {\text{MgCO}}_3\left(s\right)$   d. ${\text{SO}}_3\left(g\right)+{\text{H}}_{\text{2}}\text{O}(l)\rightleftharpoons {\text{H}}_2{\text{SO}}_{\text{4}}\left(l\right)$