。24.(6分)在101kPa时,1molCH4完全燃烧生成CO2和液态H2O,放出890kJ的热量,CH4的燃烧热为多少?1120LCH4(标准状况)燃烧后所产生的热量为多少?参考答案:1.AB 2.D 3.C 4.C 5.C 6.AD 7.A 8.A 9.B 10.A 11.C 12.C13.(1)2P(s)+3Cl2(g)===2PCl3(g);△H==-612kJ·mol-1(2)PCl5(g)===PCl3(g)+Cl2(g);△H==+93kJ·mol-1 25% 大于 (3)-399kJ·mol-1 等于14. (1)放热 (2)不影响 催化剂不改变平衡的移动 (3)减小 减小15.(1)活化能,反应热;(2)放热,<0;16.(1)等于 (2)ΔH1=ΔH2+(ΔH3+ΔH4) (3)C(s)+O2(g)=CO2(g);△H=—110.35KJ/mol-117.①N2H4(l)+2H2O2(l)==N2(g)+4H2O(g);△H=—641.6KJ/mol-1 ②N2(g)+3H2(g)===2NH3(g); ΔH=-92kJ·mol-1③H2O(g)=H2(g)+1/2O2(g);△H=—409.0KJ/mol-1④P4(S,白磷)==4P(S,红磷)△H=-29.2KJ/mol-1⑤S(s)+O2(g)SO2(g);△H=-297.23KJ/mol-1⑥CH4(g)+H2O(g)=CO(g)+3H2(g);△H=+2akJ/mol-1⑦KOH(aq)+HNO3(aq)=KNO3(aq)+H2O(l);△H=-57.3KJ/mol-1⑧CH4(g)+2O2(g)==CO2(g)+2H2O(l);ΔH=-16QkJ·mol-1⑨C2H6O(l)+3O2(g)=2CO2(g)+3H2O(l);ΔH=-10QkJ·mol-1