試題詳解

14. Which is not the valid statement?
(A) 2SO₃(g) → 2SO₂(g) + O₂(g) ＞ 0, the reaction is spontaneous at high temperatures and is entropy driven.
(B) 2C(s) + 2H₂(g) → C2H₄(g) ＞ 0, the reaction will be spontaneous at low temperatures and is entropy driven.
(C) 2NO(g) + O₂(g) → 2NO₂(g) ＜ 0, the reaction will be spontaneous at low temperatures and is enthalpy driven.
(D) N2H₄(l) + O₂(g) → N₂(g) + 2H₂O(g) ＜ 0, the reaction will be spontaneous at all temperatures.
(E) Water slowly evaporates at 25°C. This is a spontaneous reaction that is entropy driven.