题目内容
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
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A．12N2H4(g)＋12O2(g)===12N2(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
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
D
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