试题 试卷
题型:单选题 题类:常考题 难易度:普通
2016-2017学年河北省邯郸市广平一中高二上学期期中化学试卷
①C(s)+O2(g)═CO2(g)△H1; C(s)+O2(g)═CO(g)△H2
②2H2(g)+O2(g)═2H2O(g)△H1; 2H2(g)+O2(g)═2H2O(l)△H2
③H2(g)+Cl2(g)═2HCl(g)△H1; H2(g)+l2(g)═HCl(g)△H2
④CaCO3(s)═CaO(s)+CO2(g)△H1; CaO(s)+H2O(l)═Ca(OH)2(s);△H2 .
2NH3(g)+CO2(g)⇌CO(NH2)2(I)+H2O(I)△H(I)
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