Which Statement Is True About a Catalyst

Multiple Choice

Which statement is true about a catalyst?

A) It increases the activation energy involved in a reaction.
B) It can be the same phase as the reactants (heterogeneous) or a different phase (homogeneous) .
C) It is formed during an early step in the reaction and consumed in a later step.
D) It does not participate in the reaction.
E) It does not appear in the overall equation for the reaction.