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已知:(1)Zn(s)+ 1/2O2(g)=ZnO(s),ΔH= –348.3kJ/mol (2) Zn(s)+ Ag2O(s)=ZnO(s)+ 2Ag(s),ΔH= –317.3kJ/mol 则2A...
题目内容:
已知:(1)Zn(s)+ 1/2O2(g)=ZnO(s),ΔH= –348.3kJ/mol
(2) Zn(s)+ Ag2O(s)=ZnO(s)+ 2Ag(s),ΔH= –317.3kJ/mol
则2Ag(s)+ 1/2O2(g)=Ag2O(s)的ΔH等于( )
A.+31.0kJ/mol B.-665.6kJ/mol C.+332.8 kJ/mol D.-31.0 kJ/mol
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