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