Question

How does temperature effect equilibrium constant

• A. For exothermic reactions ($\Delta H^\circ < 0$), $K$ increases as $T$ increases.
• B. For endothermic reactions ($\Delta H^\circ > 0$), $K$ decreases as $T$ increases.
• C. For exothermic reactions ($\Delta H^\circ < 0$), $K$ decreases as $T$ increases.
• D. For athermal reactions ($\Delta H^\circ = 0$), $K$ is independent of $T$.

Answer 1

Answer: (C), (D)

For exothermic reactions ($\Delta H^\circ < 0$), $K$ decreases as $T$ increases. For endothermic reactions ($\Delta H^\circ > 0$), $K$ increases as $T$ increases. For athermal reactions ($\Delta H^\circ = 0$), $K$ is independent of $T$.

Answer 2

The equilibrium constant ($K$) changes with temperature ($T$) based on the reaction's enthalpy change ($\Delta H^\circ$). For exothermic reactions ($\Delta H^\circ < 0$), $K$ decreases as $T$ increases. For endothermic reactions ($\Delta H^\circ > 0$), $K$ increases as $T$ increases. For athermal reactions ($\Delta H^\circ = 0$), $K$ is independent of $T$.