The equation represents an equilibrium mixture of dinitrogen tetroxide, $\text{N}_2\text{O}_4$, and nitrogen dioxide, $\text{NO}_2$. The colours of the reactant and the product are indicated. $\text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g)$ (colourless, brown). The forward reaction is endothermic. Which statement is incorrect?
- AAt equilibrium, the concentrations of the reactant and the product stay constant.
- BAt equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction.
- CWhen the pressure is increased, a darker brown colour is seen.
- DWhen the temperature is increased, a darker brown colour is seen.