Question 38

Which one of the following given graphs represents the variation of rate constant (k) with temperature (T) for an endothermic reaction?

Name: Which one of the following given graphs represents the variation of rate constant (k) with temperature (T) for an endothermic reaction?
Uploaded: 2026-05-18T17:24:48.935310+05:30
Duration: 52 s
Description: Which one of the following given graphs represents the variation of rate constant (k) with temperature (T) for an endothermic reaction?

Solution

The relationship is defined as

$$k = A e^{-E_a / RT}$$, where $$A$$ represents the pre-exponential factor (frequency of collisions), $$E_a$$ is the activation energy, $$R$$

is the universal gas constant ($$8.314 \text{ J K}^{-1} \text{mol}^{-1}$$), and $$T$$ is the temperature in Kelvin ($$K$$). So the graph will be increasing exponentially. Thus, the right option is D.