CH4、H2、CO的燃烧热分别为890.31kJ/mol、285.8kJ/mol、110.5 kJ/mol，下列热化学方程式书写正确的是
| A．CH4(g)+2O2(g)=CO2(g)+2H2O(g)ΔH=-890.31kJ/mol |
| B．2H2(g)+ O2(g)= 2H2O(l)ΔH=-285.8kJ/mol |
| C．CO (g)+ H2O(g)= CO2(g)+ H2 (g)ΔH=+175.3kJ/mol |
| D．2CO (g)+ O2(g) = 2CO2(g)ΔH="-221" kJ/mol |
CH4、H2、CO的燃烧热分别为890.31kJ/mol、285.8kJ/mol、110.5 kJ/mol，下列热化学方程式书写正确的是
| A．CH4(g)+2O2(g)=CO2(g)+2H2O(g)ΔH=-890.31kJ/mol |
| B．2H2(g)+ O2(g)= 2H2O(l)ΔH=-285.8kJ/mol |
| C．CO (g)+ H2O(g)= CO2(g)+ H2 (g)ΔH=+175.3kJ/mol |
| D．2CO (g)+ O2(g) = 2CO2(g)ΔH="-221" kJ/mol |
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