Question

A reaction has both $\Delta H$ and $\Delta S$ $-$ve. The rate of reaction:

• A. Increases with increase in temperature
• B. Cannot be predicted for change in temperature
• C. Increases with decrease in temperature
• D. Remains unaffected by change temperature

Answer 1

Answer: (C)

Increases with decrease in temperature

Negative value of enthalpy change $\Delta H$ corresponds to exothermic reaction. With decrease in temperature, the rate of reaction increases. Hence, the option (C) is correct answer.