摘要:C. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g), △H=?542.7 kJ/mol
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肼(N2H4)是火箭发动机的一种燃料,反应时N2O4为氧化剂,反应生成N2和水蒸气。已知:N2(g) + 2O2(g)=N2O4(g); △H=+ 8.7kJ/mol
N2H4(g) + O2(g)=N2(g) + 2H2O(g); △H=534 kJ/mol
下列表示肼和N2O4反应的热化学方程式,正确的是
A. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g); △H=1076.7 kJ/mol
B. N2H4(g) + 1/2N2O4(g) =3/2N2(g) + 2H2O(g); △H=1076.7 kJ/mol
C. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g); △H=542.7 kJ/mol
D. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g); △H=1059.3 kJ/mol
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N2H4(g) + O2(g)=N2(g) + 2H2O(g); △H=534 kJ/mol
下列表示肼和N2O4反应的热化学方程式,正确的是
A. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g); △H=1076.7 kJ/mol
B. N2H4(g) + 1/2N2O4(g) =3/2N2(g) + 2H2O(g); △H=1076.7 kJ/mol
C. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g); △H=542.7 kJ/mol
D. 2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g); △H=1059.3 kJ/mol
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肼(N2H4)是火箭发动机的一种燃料,反应时N2O4为氧化剂,生成N2和H2O(g).已知:N2(g)+2O2(g)=N2O4(g);△H=+8.7 kJ·mol-1 N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0 kJ·mol-1 下列表示肼跟N2O4反应的热化学反应方程式,正确的是 | |
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A. |
2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7 kJ·mol-1 |
B. |
2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3 kJ·mol-1 |
C. |
N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7 kJ·mol-1 |
D. |
2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7 kJ.mol-1 |