CH4的燃烧热为890kJ/mol.下列热化学方程式正确的是 [ ] A．CH4
题型：选择题
问题：
CH4的燃烧热为890 kJ/mol.下列热化学方程式正确的是 [ ]
A．CH4(g)＋2O2(g)―→CO2(g)＋2H2O(l) ΔH＝＋890 kJ/mol
B．CH4＋2O2―→CO2＋2H2O ΔH＝－890 kJ/mol
C．CH4(g)＋2O2(g)―→CO2(g)＋2H2O(l) ΔH＝－890 kJ/mol
D．CH4(g)＋2O2(g)―→CO2(g)＋2H2O(g) ΔH＝－890 kJ/mol