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(2020高一下·扶余期中)
空间探测器发射时常用肼(N2H4)作燃料,以二氧化氮作氧化剂,它们相互反应生成氮气和水蒸气。已知:①N2(g)+2O2(g)=2NO2(g) ΔH=+67.7 kJ • mo1-1;②N2H4(g)+O2(g)=N2(g)+2H2O(g) ΔH= -534 kJ • mo1-1。则 N2H4(g)和 NO2(g)反应的热化学方程式可表示为( )
A . N2H4(g)+NO2 (g)= N2(g)+2H2O(g) ΔH= -567.85 kJ • mo1-1
B . 2N2H4+2NO2=3N2+4H2O ΔH= -1135.7 kJ • mo1-1
C . 2N2H4(g)+2NO2(g)= 3N2(g)+4H2O(g) ΔH= +1135.7 kJ • mo1-1
D . N2H4(1)+NO2 (g)= N2(g)+2H2O(l) ΔH= +567.85 kJ • mo1-1
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