Verified Solution • 2025–26 Session moderate

QNEET-2021-Ch-570: NEET 2021 Chemistry - Class 12 NEET-2021-Ch-570 Solution: The slope of Arrhenius plot (\( k\) v/s \(1/T\)) of first order …

The slope of Arrhenius plot (ln⁡k\ln k v/s 1/T1/T) of first order reaction is −5×103 K-5 \times 10^3\ \text{K}. The value of EaE_a of the reaction is. Choose the correct option for your answer. [Given R = 8.314 J K−1mol−1K^{-1} mol^{-1}] -83 kJ mol−1mol^{-1} 41.5 kJ mol−1mol^{-1} 83.0 kJ mol−1mol^{-1} 166 kJ mol−1mol^{-1}

Multiple Choice Options

  • A −- _ 83 kJ mol −- _ 1
  • B 41.5 kJ mol −- _ 1
  • C 83.0 kJ mol −- _ 1
  • D 166 kJ mol −- _ 1

Step-by-Step Verified Solution

Arrhenius equation k = A e _ E a / R T ln _ k = ln _ A + ln _ e _ E a / R T ln _ k = ln _ A _ E a R ( 1 T ) .... (1) Slope of ln _ k vs 1 T curve, m = _ E a R _ 5 _ 10 3 = _ E a R E a = 5 _ 10 3 _ 8.314 J/mol = 41.57 _ 10 3 J/mol _ 41.5 kJ/mol

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