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Chemistry · PYQ NEET UG 2026

हिन्दी

For an elementary chemical reaction, the Arrhenius plot is given below. If the energy of activation is \( 6.64\text{ kJ mol}^{-1} \) and \( \text{R} = 8.3\text{ J K}^{-1} \text{ mol}^{-1} \), the temperature at which the rate constant becomes \( e^2 \text{ min}^{-1} \), is

  1. A
    \( 125\text{ K} \)
  2. B
    \( 150\text{ K} \)
  3. C
    \( 200\text{ K} \)
  4. D
    \( 250\text{ K} \)

Correct answer · Option C

\( 200\text{ K} \)

Explanation

From Arrhenius equation \( \ln k = \ln A - \frac{E_a}{RT} \). Using slope and intercept values from the plot, calculate T to get 200 K.
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