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1、盖盖斯斯定定律律练练习习题题1(1)H2S 的燃烧热 H a kJmol1,则 H2S 燃烧反应的热化学方程式为。(2)已知:高温下,在密闭容器中用 H2还原 WO2可得到金属钨。当温度过高时,WO2(s)会转变为 WO2(g)。请根据以下反应:WO2(s)+2H2(g)WO2(g)+2H2(g)计算出 WO2(s)W(s)+2H2O(g);H +66.0 kJ mol1 W(s)+2H2O(g);H 137.9 kJ mol1 WO2(g)H _。2已知:2CO(g)+O2(g)2CO2(g)H566kJ/mol2H2(g)+O2(g)2H2O(g)H484kJ/molCH4(g)+2O2(
2、g)CO2(g)+2H2O(g)H890kJ/mol则:CH4(g)+CO2(g)2CO(g)+2H2(g)H_。3我国是个钢铁大国,钢铁产量为世界第一,高炉炼铁是最为普遍的炼铁方法。高炉内可能发生的反应:C(s)+O2(g)=CO2(g)H1=-393.5kJ/molC(s)+CO2(g)2CO(g)H2=+172.5 kJ/mol4CO(g)+Fe3O4(s)=4CO2(g)+3Fe(s)H3=-13.7 kJ/mol则:3 Fe(s)+2 O2(g)=Fe3O4(s)H _。4已知下列反应的反应热:CH3COOH(l)+2O2(g)=2CO2(g)+2H2O(l)H1=870.3kJ/m
3、olC(s)+O2(g)=CO2(g)H2=393.5kJ/molH2(g)+1/2O2(g)H2O(l)H3=285.8kJ/mol则:2C(s)+O2(g)+2 H2(g)CH3COOH(l)H _。5已知反应:H2(g)+1O2(g)=H2O(g)H12N2(g)+2O2=2NO2(g)H2N2(g)+H2(g)=NH3(g)H3则:4NH3(g)+7O2(g)=4NO2(g)+6H2O(g)H(用含H1、H2、H3的式子表示)。6已知:3Fe2O3(s)+CO(g)Fe3O4(s)+CO(g)FeO(s)+CO(g)则:Fe2O3(s)+3CO(g)2Fe3O4(s)+CO2(g)H=
4、47 kJ/mol3FeO(s)+CO2(g)H=+19 kJ/molFe(s)+CO2(g)H=11 kJ/mol12322Fe(s)+3CO2(g)H=。7甲醇是一种优质燃料,可制作燃料电池。工业上可用下列两种反应制备甲醇:CO(g)+2H2(g)CO2(g)3H2(g)CH3OH(g)H1 CH3OH(g)+H2O(g)H22H2(g)+O2(g)=2H2O(g)H3则:2CO(g)O2(g)=2CO2(g)H=(用 H1、H2、H3表示)。8已知:N2(g)+O2(g)=2NO(g)H=a kJmol1N2(g)+3H2(g)=2NH3(g)H2=b kJmol12H2(g)+O2(g)=2H2O(g)H=c kJmol1则:4NH3(g)+4NO(g)+O2(g)=4N2(g)+6H2O(g)H=。9生产水煤气过程中有以下反应:C(s)+CO2(g)CO(g)+H2O(g)C(s)+H2O(g)2CO(g)H1;H2(g)+CO2(g)H2;CO(g)+H2(g)H3;上述反应H3与H1、H2之间的关系为。