Chemistry 9701 · AS & A Level · Equilibria

Equilibria — practice question

The equation indicates that $\text{H}_2(g)$ and $\text{I}_2(g)$ combine to produce an equilibrium mixture. $\text{H}_2(g) + \text{I}_2(g) \rightleftharpoons 2\text{HI}(g) \quad \Delta H^\circ = -9.6\ \text{kJ mol}^{-1}$. An equal amount of $\text{H}_2(g)$ and $\text{I}_2(g)$ is prepared at temperature $T_1$, and the mixture’s composition is tracked. The outcome is displayed as a graph. The test is carried out again at a lower temperature, $T_2$. Which different graph would be obtained?

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