Question

Which one of the following does not represent the Arrhenius equation?

• A. \( \log k = \log A - \frac{E_a}{2.303RT} \)
• B. \( k = A e^{-\frac{E_a}{RT}} \)
• C. \( \ln k = -\frac{E_a}{RT} + \ln A \)
• D. \( k = A e^{\frac{E_a}{RT}} \)

Hint:

The Arrhenius equation shows that higher Ea​ reduces the rate constant, disproving an exponential increase with Ea​.

Answer 1

The Correct Option is D

The Arrhenius equation is k=Ae−Ea​/RT. Option 4 is incorrect as it implies an exponential increase with Ea​, contrary to the actual dependency, where higher Ea​ reduces the rate constant.