摘要:8.长征二号捆绑式火箭推进剂以肼(N2H4)作为燃料.NO2作为氧化剂.反应生成N2和水蒸气.已知:N2(g) + 2O2(g) =2NO2(g), △H=+67.7 kJ/mol N2H4(g) + O2(g) = N2(g) + 2H2O(g), △H=-534 kJ/mol 下列关于肼和NO2反应的热化学方程式中.正确的是B A.2N2H4(g) + 2NO2(g) = 3N2(g) + 4H2O(l),△H=-1135.7 kJ/mol B.N2H4(g) + NO2(g) = 3/2N2(g) + 2H2O(g),△H=-567.85 kJ/mol C.N2H4(g) + NO2(g) = 3/2N2(g) + 2H2O(l),△H=-1135.7 kJ/mol D.2N2H4(g) + 2NO2(g) = 3N2(g) + 4H2O(g), △H=+1135.7 kJ/mol

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