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Course: Class 12 Chemistry (India) > Unit 3

Lesson 6: Temperature dependence of the rate of a reaction
Science
Class 12 Chemistry (India)
Chemical kinetics
Temperature dependence of the rate of a reaction
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Effect of catalyst on the reaction rate.

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Problem

Chirag observes the rate of the following chemical reaction in a laboratory.
B2(g)⟶2B(g)
He then takes the same concentration of B2 in a separate container and adds a catalyst. The rate of the reaction in this case is 10times the previous case.
The temperature remains the same (T=300K) in both the cases.
What is the difference (ΔE) in the activation energy values of the reactant before and after then addition of the catalyst?
Given- R=8.314J K−1mol−1,
log⁡10=1.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
kJ mol−1.