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1 December, 13:04

Which of the following statements is false?

A)

A catalyst alters the mechanism of reaction.

B)

A catalyst increases the rate of the forward reaction, but does not alter the reverse rate.

C)

A catalyst alters the activation energy.

D)

A catalyst may be altered in the reaction, but is always regenerated.

E)

A catalyst increases the rate of reaction, but is not consumed.

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Answers (1)
  1. 1 December, 13:31
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    B) A catalyst increases the rate of the forward reaction, but does not alter the reverse rate.

    Explanation:

    A catalyst is a substance that increases the rate of reaction by providing an alternate mechanism which has low activation energy.

    Hence options A and C are correct.

    A catalyst increases the rate of forward and backward reaction to the same extent so that the equilibrium conditions remains unchanged.

    Hence option B is wrong.

    It is obvious that catalysis increases the rate of reaction but is not consumed.

    It may be altered in the reaction but is always regenerated at the end.

    Hence options D and E are correct.
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