下列热化学方程式中ΔH的绝对值能表示可燃物的燃烧热的是
A.H2(g) + 1/2O2(g) = H2O (g) ΔH=-241.8 kJ/mol |
B.CH4 (g) + 2O2(g) = CO2(g) +2H2O(g) ΔH=-802.3kJ/mol |
C.2H2(g) + O2(g) = 2H2O(l) ΔH=-571.6 kJ/mol |
D.CO(g) + 1/2O2(g) = CO2(g) ΔH=-283kJ/mol |
下列热化学方程式中ΔH的绝对值能表示可燃物的燃烧热的是
A.H2(g) + 1/2O2(g) = H2O (g) ΔH=-241.8 kJ/mol |
B.CH4 (g) + 2O2(g) = CO2(g) +2H2O(g) ΔH=-802.3kJ/mol |
C.2H2(g) + O2(g) = 2H2O(l) ΔH=-571.6 kJ/mol |
D.CO(g) + 1/2O2(g) = CO2(g) ΔH=-283kJ/mol |