题干
N2H4是一种高效清洁的火箭燃料。0.25 mol N2H4(g)完全燃烧生成氮气和气态水时，放出133.5 kJ热量。则下列热化学方程式中正确的是
A：N2H4(g)＋O2(g)===N2(g)＋H2O(g)ΔH＝＋267 kJ·mol－1
B：N2H4(g)＋O2(g)===N2(g)＋2H2O(l)ΔH＝－133.5 kJ·mol－1
C：N2H4(g)＋O2(g)===N2(g)＋2H2O(g)ΔH＝＋534 kJ·mol－1
D：N2H4(g)＋O2(g)===N2(g)＋2H2O(g)ΔH＝－534 kJ·mol－1
答案(点此获取答案解析）
D
