1. Tardigrade
  2. Question
  3. Chemistry
  4. The rate constant of a reaction is given by k=P Ze-Ea/RT under standard notation. In order to speed up the reaction, which of the following factors has to be decreased ?

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Q. The rate constant of a reaction is given by $k=P Ze^{-Ea/RT}$ under standard notation. In order to speed up the reaction, which of the following factors has to be decreased ?

KCETKCET 2020

Solution:

The expression of rate constant given in the question ( $\left.k = PZ e ^{(- Ea / RT )}\right)$ is according to Arrhenius theory. To speed up the reaction, we will have to decrease the value of $E_{a}$ i.e. activation energy and will have to increase the value of temperature $(T)$ and the number of collisions $(Z)$.