Which of the following statements about the Arrhenius equation is/are correct ?

Chemistry · JEE Advanced · NTA Exams — Chemical Kinetics

1. The pre-exponential factor becomes equal to the rate constant of the reaction at extremely high temperature
2. When the activation energy of the reaction is zero, the rate becomes independent of temperature
3. The term e^–Ea/RT represents the fraction of the molecules having energy in excess of threshold value
4. On raising temperature, rate constant of the reaction of greater activation energy increases less rapidly than that of the reaction of smaller activation energy.

Answer

(A) The pre-exponential factor becomes equal to the rate constant of the reaction at extremely high temperature, (B) When the activation energy of the reaction is zero, the rate becomes independent of temperature, (C) The term e –Ea/RT represents the fraction of the molecules having energy in excess of threshold value

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