摘要：下列热化学方程式中能表示可燃物的燃烧热的热化学方程式的是 A.H2(g)+1/2O2(g)＝H2O(gl) △H＝-241.8KJ·mol-1 B.CH4(g)+2O2(g)＝CO2(g)+2H2O(g) △H＝-802.3J·mol-1 C.CO(g)+1/2O2(g)＝CO2(g) △H＝-293KJ·mol-1 D.2H2(g)+O2(g)＝2H2O(l) △H＝-571.6KJ·mol-1
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O2(g)
CO2(g);ΔH=-283 kJ·mol-1
CO2(g)+2H2O(g);ΔH=-802.3 kJ·mol-1
2H2O(l);ΔH=-571.6 kJ·mol-1
2HCl(g);ΔH=-184.6 kJ·mol-1