Chemical Kinetics - Result Question 46
46. A catalyst
(1984, 1M)
(a) increases the average kinetic energy of reacting molecules
(b) decreases the activation energy
(c) alters the reaction mechanism
(d) increases the frequency of collisions of reacting species
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Answer:
Correct Answer: 46. $(b,c)$
Solution:
- A catalyst lowers the activation energy by enabling the reaction to continue through an alternative path, i.e. catalyst changes the reaction mechanism. However, catalyst does not affect either average kinetic energies of reactants or the collision frequency.
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