Chapter 5, Problem 5.41E

Write the equilibrium constant expression for each reaction in terms of activities, simplifying where appropriate.

(a) $\text{C}\left(\text{s}\right)+{\text{O}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons {\text{CO}}_{\text{2}}\left(\text{g}\right)$

(b) ${\text{P}}_{\text{4}}\left(\text{s}\right)+5{\text{O}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons {\text{P}}_{\text{4}}{\text{O}}_{\text{10}}\left(\text{s}\right)$

(c) $2{\text{HNO}}_{\text{2}}\left(\text{g}\right)+3{\text{Cl}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons 2{\text{NCl}}_{\text{3}}\left(\text{g}\right)+{\text{H}}_{\text{2}}\left(\text{g}\right)+2{\text{O}}_{\text{2}}\left(\text{g}\right)$