A reversible reaction is represented below. $2\text{NO}_2(\text{g}) \rightleftharpoons \text{N}_2\text{O}_4(\text{g}) \qquad \Delta H = -58\,\text{kJ mol}^{-1}$ Which statement concerning an equilibrium mixture containing $\text{NO}_2$ and $\text{N}_2\text{O}_4$ is correct?
- AIf the pressure is decreased the amount of $\text{N}_2\text{O}_4$ increases.
- BIf the temperature is increased the amount of $\text{N}_2\text{O}_4$ increases.
- CThe rates of formation and decomposition of $\text{N}_2\text{O}_4$ are not the same.
- DThe decomposition of $\text{N}_2\text{O}_4$ is an endothermic reaction.