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JAMB Chemistry 2013 Question 29

Question 29

Rates of Reaction

In the graph above, the activation energy of the catalyzed reaction is

Diagram for this question
  1. A.100KJ.
  2. B.300KJ.
  3. C.250KJ.
  4. D.200KJ.
Show the answer and explanation

Answer: A (100KJ.)

Explanation

The reactants start at 100 kJ and the catalysed (lower, dashed) curve peaks at 200 kJ, so Ea = 200 − 100 = 100 kJ.