下列热化学方程式中△H的绝对值能表示可燃物的燃烧热的是
A.1/2H2(g)+ 1/2Cl2(g)= HCl(g)ΔH =-92.3kJ/mol |
B.CH4(g)+ 2O2(g)= CO2(g)+2H2O(g)ΔH =-802.3kJ/mol |
C.2H2(g)+ O2(g)= 2H2O(l)ΔH =-571.6kJ/mol |
D.CO(g)+ 1/2O2(g)= CO2(g)ΔH =-283kJ/mol |
下列热化学方程式中△H的绝对值能表示可燃物的燃烧热的是
A.1/2H2(g)+ 1/2Cl2(g)= HCl(g)ΔH =-92.3kJ/mol |
B.CH4(g)+ 2O2(g)= CO2(g)+2H2O(g)ΔH =-802.3kJ/mol |
C.2H2(g)+ O2(g)= 2H2O(l)ΔH =-571.6kJ/mol |
D.CO(g)+ 1/2O2(g)= CO2(g)ΔH =-283kJ/mol |
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