The slope of Arrhenius Plot 1 lnk v/s T æ ö ç ÷ è ø of first order reaction is –5 × 103 K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R=8.314 JK–1 mol–1] (A)

Question

The slope of Arrhenius Plot 1 lnk v/s T æ ö ç ÷ è ø of first order reaction is –5 × 103 K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R=8.314 JK–1 mol–1]

(A) 41.5 kJ mol–1
(B) 83.0 kJ mol–1
(C) 166 kJ mol–1
(D) –83 kJ mol–1

Prashant Kotian · Accepted Answer

Correct answer: A. lnK = lnA – Ea 1 R T æ ö ç ÷ è ø In lnk v/s 1 T graph Slope = – Ea R 3 –Ea –5 10 8.314 ´ = Ea = 5 × 103 × 8.314 = 41500 J mol–1 or 41.5 kJ mol–1 9 CODE - M2

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