Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Chemical Kinetics

Question:

Identify the correct expression of Arrhenius equation:

Options:

$k = Ae^{-E_a/RT}$

$k = Ae^{E_a/RT}$

$k = Ae^{E_a/T}$

$k = Ae^{E_a/R}$

Correct Answer:

$k = Ae^{-E_a/RT}$

Explanation:

The correct answer is Option (1) → $k = Ae^{-E_a/RT}$

The Arrhenius equation relates the rate constant k to the activation energy (Ea):

$k = A \, e^{-E_a / RT}$

  • A = frequency factor
  • R = gas constant
  • T = temperature in Kelvin
  • $E_a$​ = activation energy