Question

The rate constant of a reaction at 400 K and 500 K are \( 0.04\,\text{min}^{-1} \) and \( 0.08\,\text{min}^{-1} \) respectively. The \( E_a \) of the reaction is about ( \( 2.303R = 19.15\,\text{J mol}^{-1}\text{K}^{-1} \) )

Hint:

To speed up calculations in competitive exams, memorize $\log 2 \approx 0.3$ and $\log 3 \approx 0.48$. Always be mindful of units, converting final energy values from Joules to kiloJoules as options usually require it.

Answer 1