![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
下面均是乙烯与氧气反应的热化学方程式(25℃,101kPa) C 2 H 4 (g)+3O 2 (g)=2CO 2 (g)+2H 2 O(l)△H=-1411kJ/mol C 2 H 4 (g)+3O 2 (g)=2CO 2 (g)+2H 2 O(g)△H=-1329kJ/mol C 2 H 4 (g)+2O 2 (g)=2CO(g)+2H 2 O(l)△H=-873kJ/mol C 2 H 4 (g)+2O 2 (g)=2CO(g)+2H 2 O(g)△H=-763kJ/mol 由此判断,乙烯的燃烧热是( )