25℃、101 kPa下,碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2800 kJ/mol,则下列热化学方程式正确的是( )
A.C(s)+1/2O2(g)==CO(g)△H =-393.5 kJ/mol |
B.CH4(g)+2O2(g)="=" CO2(g) + 2H2O(1)△H =-890.3 kJ/mol |
C.2H2(g)+O2(g)==2H2O(1)△H = + 571.6 kJ/mol |
D.1/2C6H12O6(s) + 3O2(g) ="==" 3CO2(g) + 3H2O(g)△H =-1400 kJ/mol |