11 . B
The definition and properties of a catalyst are discussed in the section on factors affecting the
reaction rate.12 . A. Keq remains constant at 0.16. Catalysts do not affect equilibrium position.
B. Addition of a catalyst decreases the activation energy.13 . D
At equilibrium, both the forward and reverse reactions are proceeding. Any change in the
equilibrium conditions will shift the equilibrium in order to alleviate the stress on the reaction.