Question

which statement about catalysts is false? some catalysts change the way the reaction happens. some catalysts provide a surface to improve the chance for correct orientation of reactants. catalysts share the same role as inhibitors. catalysts are not used up during the reaction.

Explanation:

• Catalysts speed up reactions (by lowering activation energy, changing reaction pathway, or providing a surface for reactant orientation) and are not consumed.
• Inhibitors slow down reactions. So catalysts and inhibitors have opposite roles.
• The first statement is true (catalysts can change reaction mechanism). The second is true (e.g., solid catalysts for orientation). The fourth is true (catalysts are regenerated). The third statement is false as catalysts and inhibitors have different roles.

Answer:

C. Catalysts share the same role as inhibitors.