已知:(1)Zn(s)+1/2O 2 (g)=ZnO(s) △H=-348.3kJ·mol -1
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已知:(1)Zn(s)+1/2O 2 (g)=ZnO(s) △H=-348.3kJ·mol -1 2Ag(s)+1/2O 2 (g)=Ag 2 O(s) △H=-31.0kJ·mol -1 则Zn(s)+Ag 2 O(s)=ZnO(s)+2Ag(s)的△H等于 |
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A.-317.3kJ·mol -1 B.-379.3kJ·mol -1 C.-332.8kJ·mol -1 D.+317.3kJ·mol -1 |
![已知:(1)Zn(s)+1/2O 2 (g)=ZnO(s) △H=-348.3kJ·mol -1](/uploads/image/z/18478187-35-7.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%9A%EF%BC%881%EF%BC%89Zn%EF%BC%88s%EF%BC%89%EF%BC%8B1%2F2O+2+%EF%BC%88g%EF%BC%89%3DZnO%EF%BC%88s%EF%BC%89+%E2%96%B3H%EF%BC%9D%EF%BC%8D348%EF%BC%8E3kJ%C2%B7mol+-1)
A
已知 (1) 标况下 2C(s)+O2(g)==2CO2(g) △H=-221KJ/mol
已知:CO(g)+H 2 O(g)⇌CO 2 (g)+H 2 (g)△H=-42kJ•mol -1
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
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1.c(s)+o2(g)=co2(g);△H=-393.5kj/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)