已知:+1/2O2.ΔH= ―348.3kJ/mol 查看更多

 

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6.已知:(1)Zn(s)+1/2O2(g)==ZnO(s),ΔH=-348.3kJ/mol

         (2) 2Ag(s)+1/2 O2(g)== Ag2O(s),ΔH=-31.0kJ/mol

则Zn(s)+ Ag2O(s)== ZnO(s)+ 2Ag(s)的ΔH等于

A.-317.3kJ/mol           B.-379.3kJ/mol            C.-332.8 kJ/mol          D.317.3 kJ/mol

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已知:(1)Zn(s)+1/2O2(g) = ZnO(s);ΔH =-348.3 kJ/mol;(2)2Ag(s)+1/2O2(g) = Ag2O(s);ΔH =-31.0 kJ/mol,则Zn(s)+Ag2O(s) = ZnO(s)+2Ag(s)的?ΔH等于( )

A.-317.3 kJ/molB.-379.3 kJ/molC.-332.8 kJ/molD.317.3 kJ/mol

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已知: (1)Zn(s)+1/2O2(g) = ZnO(s);ΔH =-348.3 kJ/mol;(2)2Ag(s)+1/2O2(g) = Ag2O(s);ΔH =-31.0 kJ/mol,则Zn(s)+Ag2O(s) = ZnO(s)+2Ag(s)的ΔH等于(  )

A.-317.3 kJ/mol         B.-379.3 kJ/mol      C.-332.8 kJ/mol           D.317.3 kJ/mol

 

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已知:(1)Zn(s)+1/2O2(g)=ZnO(s),ΔH=-348.3kJ/mol(2)2Ag(s)+1/2O2(g)=Ag2O(s),ΔH=-31.0kJ/mol   则Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s)的ΔH等于

  A.-317.3kJ/mol     B.-379.3kJ/mol     C.-332.8kJ/mol     D. +317.3 kJ/mol

 

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已知:(1)Zn(s)+1/2O2(g)=ZnO(s),ΔH=-348.3kJ/mol

        (2)2Ag(s)+1/2O2(g)=Ag2O(s),ΔH=-31.0kJ/mol

   则Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s)的ΔH等于(  )

A  -317.3kJ/mol                         B  -379.3kJ/mol

C  -332.8kJ/mol                         D  +317.3 kJ/mol

 

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