ExamBro
ExamBro
CUET · CHEMISTRY · PYQ PAPER 2025

The rate constant, activation energy and the Arrhenius parameter at \(27^{\circ} C\) are \(2.0 \times 10^{-5} s^{-1}, 100 kJ mol ^{-1}\) and \(6.0 \times 10^{14} s^{-1}\) respectively.
The value of the rate constant at a very high temperature \((T \rightarrow \infty)\) approaches to:

  1. A \(2.0 \times 10^{-5} s^{-1}\)
  2. B Infinite
  3. C \(6.0 \times 10^{14} s^{-1}\)
  4. D \(4 \times 10^{-5} s^{-1}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(2.0 \times 10^{-5} s^{-1}\)

Step-by-step Solution

Detailed explanation

\(k = A e^{-E_a / RT}\) As \(T \rightarrow \infty\), \(-E_a / RT \rightarrow 0\). \(k \rightarrow A e^0 = A\) \(k = 6.0 \times 10^{14} s^{-1}\)
Same subject
Explore more questions on app