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ChemistryNEET 2021Arrhenius equation and activation energy

Chemical Kinetics

The slope of the Arrhenius plot (ln⁡k\ln k vs 1T\dfrac1T) of a first order reaction is −5×103-5 \times 10^{3} K. The value of EaE_a of the reaction is (given R=8.314 J K−1 mol−1R = 8.314\ \mathrm{J\,K^{-1}\,mol^{-1}}):

  1. A.41.5 kJ mol−141.5\ \mathrm{kJ\,mol^{-1}}✓
  2. B.83.0 kJ mol−183.0\ \mathrm{kJ\,mol^{-1}}
  3. C.166 kJ mol−1166\ \mathrm{kJ\,mol^{-1}}
  4. D.−83 kJ mol−1-83\ \mathrm{kJ\,mol^{-1}}

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