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QJEEM20Ch8a26: JEE Main 2020 Chemistry - Class 12 JEEM20Ch8a26 Solution: The rate constant (k) of a reaction is measured at differenct…

The rate constant (k) of a reaction is measured at differenct temperatures (T), and the data are plotted in the given figure. The activation energy of the reaction in kJ mol–1 is :
(R is gas constant) JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Chemical Kinetics and Nuclear Chemistry Question 109 English

Multiple Choice Options

  • A R
  • B 2R
  • C 1R
  • D 12R

Step-by-Step Verified Solution

K = Ae−EaRT

lnK = lnA −EaRT

⇒ lnK = lnA −Ea103103RT

∴ Slope = −Ea103R = −105

⇒ EaR = 2000 J/mol

⇒ Ea = 2R KJ/mol

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