N2H4是一种高效清洁的火箭燃料,0.25 mol N2H4(g)完全燃烧生成N2和气态水放出133.5kJ热量,则下列热化学方程式中正确的是
A.N2H4(g)+O2(g)N2(g)+H2O(g)△H="+267" kJ·mol-1 |
B.N2H4(g)+O2(g)N2(g)+2H2O(g)△H=-133.5 kJ·mol-1 |
C.N2H4(g)+O2(g)N2(g)+2H2O(l)△H=-534 kJ·mol-1 |
D.N2H4(g)+O2(g)N2(g)+2H2O(g)△H=-534 kJ·mol-1 |