在25℃、101kPa下,1g甲醇燃烧生成CO2和液态水时放热22.68kJ,下列热化学方程式正确的是
A.CH3OH(l)+3/2O2(g)===CO2(g)+2H2O(l)△H=+725.8 kJ/mol |
B.2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)△H=-1452 kJ/mol |
C.2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)△H=-725.8 kJ/mol |
D.2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)△H=+1452 kJ/mol |