N2H4是一种高效清洁的火箭燃料。0.25 mol N2H4(g)完全燃烧生成氮气和气态水时,
放出133.5 kJ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);ΔH=+267 kJ·mol-1 |
B.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =-534 kJ·mol-1 |
C.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =+534 kJ·mol-1 |
D.N2H4(g)+O2(g)====N2(g)+2H2O(l);ΔH =-133.5 kJ·mol-1 |