已知：\(m{(1)Zn(s)+ \dfrac {1}{2}O_{2}(g)═ZnO(s)}\)，\(m{\triangle H=-348.3kJ/mol}\) \(m{(2)2Ag(s)+ \dfrac {1}{2}O_{2}(g)═Ag_{2}O(s)}\)，\(m{\triangle H=-31.0kJ/mol}\) 则\(m{Zn(s)+Ag_{2}O(s)═ZnO(s)+2Ag(s)}\)的\(m{\triangle H}\)等于\(m{(}\)　　\(m{)}\) --优优班--学霸训练营

已知：\(\rm{(1)Zn(s)+ \dfrac {1}{2}O_{2}(g)═ZnO(s)}\)，\(\rm{\triangle H=-348.3kJ/mol}\)
\(\rm{(2)2Ag(s)+ \dfrac {1}{2}O_{2}(g)═Ag_{2}O(s)}\)，\(\rm{\triangle H=-31.0kJ/mol}\)
则\(\rm{Zn(s)+Ag_{2}O(s)═ZnO(s)+2Ag(s)}\)的\(\rm{\triangle H}\)等于\(\rm{(}\)　　\(\rm{)}\)

A．\(\rm{-317.3kJ/mol}\)

B．\(\rm{-379.3kJ/mol}\)

C．\(\rm{-332.8kJ/mol}\)

D．\(\rm{+317.3}\) \(\rm{kJ/mol}\)

【考点】用盖斯定律及有关计算

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难度：较易

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