题干

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、2 800 kJ/mol,则下列热化学方程式正确的是

A:C(s)+O2(g)=CO(g);△H='-393.5' kJ/mol

B:2H2(g)+O2(g)=2H2O(g);△H='+571.6' kJ/mol

C:CH4(g)+2O2(g)=CO2(g)+2H2O(g);△H='-890.3' kJ/mol

D:C6H12O6(s)+3O2(g)=3CO2(g)+3H2O(l);△H='-1' 400 kJ/mol

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答案(点此获取答案解析)

D