OnlineCBT
Chemistry · PYQ NEET UG 2021
हिन्दीThe slope of Arrhenius plot \( \ln k \text{ v/s } \frac{1}{T} \) of first order reaction is \( -5 \times 10^{3}\text{ K} \). The value of \( E_{a} \) of the reaction is _______. Choose the CORRECT option for answer. [Given: \( R = 8.314\text{ J K}^{-1}\text{ mol}^{-1} \)]
Correct answer · Option 4
\( 41.5\text{ kJ mol}^{-1} \)
Explanation
Slope = \( -\frac{E_{a}}{R} = -5 \times 10^{3} \). Thus, \( E_{a} = 5 \times 10^{3} \times 8.314 = 41570\text{ J mol}^{-1} \approx 41.5\text{ kJ mol}^{-1} \).
