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题型:填空题 题类:常考题 难易度:普通
2015-2016学年湖南省衡阳市衡阳县四中高二下学期期中化学试卷
TiO2(s)+2Cl2(g)═TiCl4(1)+O2(g)△H=+140.5kJ/mol
C(s,石墨)+ O2(g)═CO(g)△H=﹣110.5kJ/mol
则反应TiO2(s)+2Cl2(g)+2C(s,石墨)═TiCl4(1)+2CO(g)的△H=kJ/mol.
SiCl4(g)+2Zn(l)⇌Si(s)+2ZnCl2(g)△H1
SiCl4(g)+2Zn(g)⇌Si(s)+2ZnCl2(g)△H2 .
①2CH3OH(l)+3O2(g)═2CO2(g)+4H2O(g)△H═﹣akJ•mol﹣1
②2CO(g)+O2(g)═2CO2(g)△H═﹣bkJ•mol﹣1
③H2O(g)═H2O(l)△H═﹣ckJ•mol﹣1
则CH3OH(l)+O2(g)═CO(g)+2H2O(l)△H═{#blank#}1{#/blank#} kJ•mol﹣1 .
2Hg(l)+O2(g)=2HgO(s) ΔH2=-181.6 kJ·mol-1
则反应Zn(s)+HgO(s)=ZnO(s)+Hg(l)的ΔH为( )
①4NH3(g)+4NO(g)+O2(g) 4N2(g)+6H2O(g) △H1=akJ·mol-1
②4NH3(g)+2NO2(g)+O2(g) 3N2(g)+6H2O(g) △H2=bkJ·mol-1
副反应4NH3(g)+5O2(g) 4NO(g)+6H2O(g) △H4=dkJ·mol-1
可以计算出反应2NO(g)+O2(g) 2NO2(g)的△H为( )
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