For a reaction, consider the plot of l n   k versus 1 / T given in the figure. If the rate constant of…

For a reaction, consider the plot of ln k versus 1/T given in the figure. If the rate constant of this reaction at 400 K is 10-5s-1 , then the rate constant at 500 K is:

  1. 10-4s-1
  2. 10-6s-1
  3. 2x10-4s-1
  4. 4x10-4s-1

Solution

ln k=ln A-EaRT=ln A-46061T1-1T2∴EAR=4606

ln k10-5=4606×500-400500×400

ln k10-5=4606×12000=2.303

ln k10-5=ln 10

k=10-4s-1

Asked in: JEE Main 2019 (12 Jan Shift 2)

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