4、1=10.11kJC8H18:×5518kJ·mol-1=48.40kJCH4:×890.3kJ·mol-1=55.64kJ故答案为B。4.已知:①N2(g)+2O2(g)===2NO2(g)ΔH1=67.7kJ·mol-1②N2H4(g)+O2(g)===N2(g)+2H2O(g)ΔH2=-534kJ·mol-1则2N2H4(g)+2NO2(g)===3N2(g)+4H2O(g)的ΔH是( )A.-1135.7kJ·mol-1B.6601.7kJ·mol-1C.-466.3kJ·mol-1D.1000.3kJ·mol-1解析:选A ②