Question

Which of the following statements concerning catalysts is false?

a) Catalysts may be solid, if the reactants are gaseous
b) Catalysts may be used up, but are always regenerated
c) Catalysts speed up reactions that would otherwise take years
d) Catalysts raise the activation energy of a reaction
e) Catalysts increase the number of effective collisions

Answer 1

what is the final and correct answer?

Answer 2

d) Catalysts raise the activation energy of a reaction

Catalysts lower the activation energy of a reaction, making it easier for the reaction to occur. Therefore, statement d) is false.

Answer 3

The correct answer is:
d) Catalysts lower the activation energy of a reaction