下列热化学方程式中的ΔH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的ΔH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 |