SAT Subject Test Chemistry,10 edition

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