试题 试卷
题型:单选题 题类:常考题 难易度:困难
重庆市第八中学2017-2018学年高一下学期化学期末考试试卷
②4NH3(g)+3O2(g)=2N2(g)+6H2O(g)△H2=-bkJ·mol-1
③H2(g)+1/2O2(g)=H2O(g)△H3=-ckJ·mol-1
④H2(g)+1/2O2(g)=H2O(l)△H4=-dkJ·mol-1
下列叙述正确的是( )
①CH4(g)+4NO2(g)=4NO(g)+CO2 (g)+2H2O(g)△H1=﹣574kJ•mol﹣1
②CH4(g)+4NO(g)=2N2(g)+CO2(g)+2H2O(g)△H2=﹣1160kJ•mol﹣1
下列选项正确的是( )
①C(s)+O2(g)=CO2(g)△H1=﹣393.5kJ•mol﹣1;
②H2(g)+ O2(g)=H2O(g)△H2=﹣242.0kJ•mol﹣1;
③CO(g)+ O2(g)=CO2(g)△H3=﹣283.0kJ•mol﹣1;
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