![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
肼(N 2 H 4 )是火箭发动机的一种燃料,反应时N 2 O 4 为氧化剂,生成N 2 和水蒸气。已知: N 2 (g)+2O 2 (g)=N 2 O 4 (g) ΔH='+8.7' kJ·mol -1 N 2 H 4 (g)+O 2 (g)=N 2 (g)+2H 2 O(g) ΔH='-534.0' kJ·mol -1 下列表示肼跟N 2 O 4 反应的热化学方程式,正确的是
A.
2N 2 H 4 (g)+N 2 O 4 (g)=3N 2 (g)+4H 2 O(g) ΔH='-542.7' kJ·mol -1
B.
2N 2 H 4 (g)+N 2 O 4 (g)=3N 2 (g)+4H 2 O(g) ΔH='-1059.3' kJ·mol -1
C.
N 2 H 4 (g)+ N 2 O 4 (g)= N 2 (g)+2H 2 O(g) ΔH='-1076.7' kJ·mol -1
D.
2N 2 H 4 (g)+N 2 O 4 (g)=3N 2 (g)+4H 2 O(g) ΔH='-1076.7' kJ·mol -1