Question

Which of the following statements is in accordance with the Arrhenius equation?

• A. Rate constant decreases exponentially with increase in temperature
• B. Rate of reaction does not change with increase in activation energy
• C. Rate of a reaction increases with decrease in activation energy
• D. Rate of a reaction increases with increase in temperature

Answer 1

The correct option is D Rate of a reaction increases with increase in temperature

The statement (D) is in accordance with the Arrhenius equation.

(A) Rate constant increases with increase in temperature.
$k=A{e}^{-Ea/RT}$

(B) and (C) Rate of reaction increases with an increase in activation energy.

(D) Rate of a reaction increases with increase in temperature :

T increases $\to$ $Ea/RT$ deceases $\to$ $-Ea/RT$ increases $\to$ $e^{-Ea/RT}$ increases $\to$ k increases $\to$ rate increases.

Hence, the correct option is D.