已知:(1)Zn(s)+1/2O 2 (g)=ZnO(s) ΔH=-348.3kJ/mol (2)2Ag(s)+1/2O
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已知: (1)Zn(s)+1/2O 2 (g)=ZnO(s) ΔH=-348.3kJ/mol (2)2Ag(s)+1/2O 2 (g)=Ag 2 O(s) ΔH=-31.0kJ/mol 则ZnO(s)+2Ag(s)=Zn(s)+Ag 2 O(s)的ΔH等于 |
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A.-317.3kJ/mol B.+379.3kJ/mol C.-332.8kJ/mol D.+317.3 kJ/mol |
![已知:(1)Zn(s)+1/2O 2 (g)=ZnO(s) ΔH=-348.3kJ/mol (2)2Ag(s)+1/2O](/uploads/image/z/16565915-11-5.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%9A%EF%BC%881%EF%BC%89Zn%28s%29%EF%BC%8B1%2F2O+2+%28g%29%EF%BC%9DZnO%28s%29+%CE%94H%EF%BC%9D%EF%BC%8D348%EF%BC%8E3kJ%2Fmol+%EF%BC%882%EF%BC%892Ag%28s%29%EF%BC%8B1%2F2O)
D
已知:Fe2O3(s)+3C(石墨)==2Fe(s)+3CO(g),△H=+489.0kJ·mol-1
13、已知两个热化学方程式:C(s)+O2(g)====CO2(g) ΔH=-9.5 kJ·mol-1 2H2(g)+O
已知 (1) 标况下 2C(s)+O2(g)==2CO2(g) △H=-221KJ/mol
已知:C(s)+1/2O2(g)=CO(s)▲H=-110.35kj/mol C(s)+O2(g)=CO2(g)▲H=-
已知:CO(g)+H 2 O(g)⇌CO 2 (g)+H 2 (g)△H=-42kJ•mol -1
已知101kPa时,2C(s)+O2(g)=2CO(g);ΔH=-221kJ/mol
已知Fe2O3(s)+3CO(g)=2Fe(s)+3CO2(g) △H=-24.8KJ/mol
已知如下两个热化学方程式 C(s) O2(g)===CO2(g);△H=-393.5kJ/mol 2H2(g)
已知少(s)+少O2(g)═2少O(g)△H>0,反应速率为v1,Zn(s)+2H少l(aq)═Zn少l2(aq)+H2
已知①2C(s)+O2(g)==2CO(g) △H=-221.0KJ/mol
硫及其化合物在工业上应用广泛.1已知:①S(g)+O2(g)=SO2(g) △H=-574.0kj×mol-1 ②2H2
C(s)+O2(g)=CO2(g) ΔH=-393.5 kJ/mol