N
2H
4是一种高效清洁的火箭燃料。0.25 mol N
2H
4(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、1/2N2H4(g)+1/2O2(g)=1/2N2(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