1．下列各组中两个反应的反应热，其中△H1＞△H2
A．2H2(g)＋O2(g)＝2H2O(g) △H1；2H2(g)＋O2(g)＝2H2O(l) △H2
B．S(g)＋O2(g)＝SO2(g) △H1；S(s)＋O2(g)＝SO2 (g) △H2
C．2SO2(g)＋O2(g)＝2SO3(g) △H1；2SO3(g)＝O2(g)＋2SO2(g) △H2
D．已知反应：C(金刚石，s)＝C(石墨，s)ΔH＜0，C(金刚石，s)+O2(g)＝CO2(g) △H1；C(石墨，s)+O2(g)＝CO2(g) △H2
