8.已知:+1/2O2.ΔH=-348.3kJ/mol +1/2 O2(g)== Ag2O(s).ΔH=-31.0kJ/mol 则Zn(s)+ Ag2O的ΔH等于 A.-317.3kJ/mol B.-379.3kJ/mol C.-332.8 kJ/mol D.317.3 kJ/mol 查看更多

 

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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)   △H=-348.3kJ·mol-1 
(2)2Ag(s)+1/2O2(g)=Ag2O(s)   △H=-31.0kJ·mol-1
则Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s)的△H等于


  1. A.
    -317.3kJ·mol-1
  2. B.
    -379.3kJ·mol-1
  3. C.
    -332.8kJ·mol-1
  4. D.
    +317.3kJ·mol-1

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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)+1/2 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 = -348.3kJ/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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