阿摩線上測驗
21. At constant pressure, the reaction； 2NO2(g) → N2O4(g) is exothermic. The reaction (as written)
(A) spontaneous at low temperatures but not at high temperatures
(B) spontaneous at high temperatures but not at low temperatures
(C) always spontaneous
(D) never spontaneous
(E) none of these
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統計： A(18), B(1), C(1), D(0), E(0) #2735509
統計： A(18), B(1), C(1), D(0), E(0) #2735509
