Chapter 16, Problem 67E

Consider the reaction

$2{\text{NO}}_{\text{2}}\left(g\right)\rightleftharpoons {\text{N}}_{\text{2}}{\text{O}}_{\text{4}}\left(g\right)$

For each of the following mixtures of reactants and products at 25°C, predict the direction in which the reaction will shift to reach equilibrium.

a. $P_{{\text{NO}}_{\text{2}}}=P_{{\text{N}}_{\text{2}}{\text{O}}_{\text{4}}}=1.0\text{atm}$

b. $P_{{\text{NO}}_{\text{2}}}=0.21\text{atm},P_{{\text{N}}_{\text{2}}{\text{O}}_{\text{4}}}=0.50\text{atm}$

c. $P_{{\text{NO}}_{\text{2}}}=0.29\text{atm},P_{{\text{N}}_{\text{2}}{\text{O}}_{\text{4}}}=1.6\text{atm}$