The slope of Arrhenius plot ( k v/s 1 T ) of first order reaction is -5 10 3 K . The value of E a of the reaction is. Choose the correct option for your answer. [Given R = 8.314 JK -1 mol -1 ]

1. A. 83.0 kJ mol -1
2. B. 166 kJ mol -1
3. C. -83 kJ mol -1
4. D. 41.5 kJ mol -1

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