25℃、101 kPa下,碳、氢气、甲烷和葡萄糖的燃烧热依次是
393.5kJ/mol、285.8kJ/mol、890.3kJ/mol、2800kJ/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、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.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.1/2C6H12O6(s) + 3O2(g) === 3CO2(g) + 3H2O(1);△H =-1400 kJ/mol 展开
A.C(s)+1/2O2(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.1/2C6H12O6(s) + 3O2(g) === 3CO2(g) + 3H2O(1);△H =-1400 kJ/mol 展开
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