甲醇广泛用作燃料电池的燃料,可出天然气来合成,已知:
①2CH4(g)+O2(g)=2CO(g)+4H2(g) △H=-71kJ/mol
②CO(g)+2H2(g)=CH3OH(l) △H=-90.5kJ/mol
③CH4(g)+2O2(g)=CO2+2H2O(g) △H=-890kJ/mol
下列说法不能得出的结论是
A.反应②在任何温度下均能自发进行 |
B.CO(g)+2H2(g)=CH3OH(g)△H>-90.5kJ/mol |
C.甲醇的燃烧热为764kJ/mol |
D.若CO的燃烧热为282.5kJ/mol,则H2的燃烧热为286kJ/mol |