Consider the Arrhenius equation given below and mark the correct option.
` k= Ae^(-E_a //RT)`

Options

A. Rate constant increases exponentially with increasing activation energy and decreasing temperature
B. Rate constant decreases exponentially with increasing activation energy and increasing temperature
C. Rate constant increases exponentially with decreasing activation energy and decreasing temperature
D. Rate constant increases exponentially with decreasing activation energy and increasing temperature.

Answer

D

Explanation

According to Arrhenius equation, `k = Ae^(- E_a//RT).-E_a//RT` decreases with increase in `E_a` This leads to decrease in the value of k. On increasing T, `E_a //RT` decreases or `-E_a //RT` increases. This leads to increase in the value of k.