·(1)CH3COOH(l)+2O2(g)═2CO2(g)+2H2O(l)△H1=﹣870.3kJ•mol﹣1
·(2)C(s)+O2(g)═CO2(g)△H2=﹣393.5kJ•mol﹣1
·(3)H2(g)+ O2(g)═H2O(l)△H3=﹣285.8kJ•mol﹣1
则反应2C(s)+2H2(g)+O2(g)═CH3COOH(l)的△H为( )
A.锌锰电池 | B.氢氧燃料电池 | C.铅蓄电池 | D.镍镉电池 |
①H2(g)+ O2(g)═H2O(l)△H=﹣285.8kJ•mol﹣1
②H2(g)+ O2(g)═H2O(g)△H=﹣241.8kJ•mol﹣1
③C(s)+ O2(g)═CO(g)△H=﹣110.5kJ•mol﹣1
④C(s)+O2(g)═CO2(g)△H=﹣393.5kJ•mol﹣1
回答下列各问题:
①Fe2O3(s)+3CO(g)═2Fe(s)+3CO2(g)△H1=﹣25kJ•mol﹣1;
②3Fe2O3(s)+CO(g)═2Fe3O4(s)+CO2(g)△H2=﹣47kJ•mol﹣1;
③Fe3O4(s)+CO(g)═3FeO(s)+CO2(g)△H3=+19kJ•mol﹣1 .
写出FeO(s)被CO还原成Fe和CO2的热化学方程式.
已知:R1CHO+R2CHCHO
①含有苯环 ②核磁共振氢谱有三个峰.