Questions 21–24
18 . Increases effective collisions without increasing average energy
19 . Decreases activation energy
20 . Increases average kinetic energy
(A) positive ΔH
(B) negative ΔH
(C) positive ΔG
(D) negative ΔG
(E) positive ΔS
21 . Describes a spontaneous reaction
22 . Describes an endothermic reaction
23 . Describes a nonspontaneous reaction
24 . Is multiplied by temperature in the equation that calculates free energy