Question

According to the Arrhenius equation,

• A. a high activation energy usually implies a fast reaction.
• B. rate constant increases with increase in temperature. This is due to a greater number of collisions whose energy exceeds the activation energy.
• C. higher the magnitude of activation energy, stronger is the temperature dependence of the rate constant
• D. the pre-exponential factor is a measure of the rate at which collisions occur, irrespective of their energy.

Answer 1

Answer: (B), (C), (D)

(i) Rate of reaction increases with increase in temperature, $K\propto T$
(ii) $\frac{dK}{dT}\propto Ea$
(iii) Pre-exponential factor represents collision frequency