分析以下几个热化学方程式,哪个是表示固态碳和气态氢气燃烧时的燃烧热的是( )
A.C(s)+O2(g)="==CO(g)" ΔH ="—110.5" kJ/mol |
B.C(s)+O2(g)===CO2(g) ΔH =-393.5 kJ/mol |
C.2H2(g)+O2(g)===2H2O(l) ΔH =-571.6 kJ/mol |
D.H2(g)+1/2O2(g)===H2O(g) ΔH =-241.8 kJ/mol |
分析以下几个热化学方程式,哪个是表示固态碳和气态氢气燃烧时的燃烧热的是( )
A.C(s)+O2(g)="==CO(g)" ΔH ="—110.5" kJ/mol |
B.C(s)+O2(g)===CO2(g) ΔH =-393.5 kJ/mol |
C.2H2(g)+O2(g)===2H2O(l) ΔH =-571.6 kJ/mol |
D.H2(g)+1/2O2(g)===H2O(g) ΔH =-241.8 kJ/mol |