Question

Which statement best describes the amount of catalyst that remains at the end of a reaction?

A) More catalyst is present at the end than at the beginning of the reaction.
B) Less catalyst is present at the end than at the beginning of the reaction.
C) The amount of catalyst is the same at the end as at the beginning of the reaction.
D) The catalyst is consumed by the reaction, so none remains at the end of the reaction.

Answer 1

Answer is: C) The amount of catalyst is the same at the end as at the beginning of the reaction.

A catalyst is a chemical species that is present at the beginning of a reaction and reappears at the end.

An intermediate forms during the reaction and disappears before the end.

Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst.

Reactions occur faster with a catalyst because they require less activation energy.

Answer 2

I believe the correct answer is C. The amount of catalyst is the same at the end as at the beginning of the reaction. Catalysts can't be consumed by the reaction thus is not D.