Question

2003年10月15日我國成功發射了第一艘載人航天飛船——“神州五號”．從此我國進入了航天大國和航天強國行列．發射“神五”時用肼(N2H4)作為火箭發動機要的燃料，NO2為氧化劑，反應生成N2和水蒸氣． 已知：N2(g)＋2O2(g)＝2NO2(g)；△H＝＋67.7kJ/mol． N2H4(g)＋O2(g)＝N2(g)＋2H2O(g)；△H＝–534kJ/mol．下列關于肼和NO2反應的熱化學方程式中，正確的是
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A．	2N2H4(g)＋2NO2(g)＝3N2(g)＋4H2O(l)；△H＝–1135.7kJ/mol
B．	2N2H4(g)＋2NO2(g)＝3N2(g)＋4H2O(g)；△H＝–1000.3kJ/mol
C．	N2H4(g)＋NO2(g)＝3/2N2(g)＋2H2O(l)；△H＝–1135.7kJ/mol
D．	2N2H4(g)＋2NO2(g)＝3N2(g)＋4H2O(g)；△H＝–1135.7kJ/mol．

Answer 1

答案：D