題目列表(包括答案和解析)
已知:(1)Zn(s)+O2(g)====ZnO(s),△H=-348.3kJ/mol
(2)2Ag(s)+O2(g)====Ag2O(s),△H=-31.0kJ/mol
則Zn與Ag2O反應(yīng)生成ZnO和Ag的熱化學(xué)方程式為( )
A.Zn(s)十Ag2O(s)====ZnO(s)+2Ag(s),△H=317.3kJ/mol
B.Zn+Ag2O=====ZnO+2Ag,△H=317.3kJ/mol
C.Zn(s)+Ag2O(s)=====ZnO(s)+2Ag(s),△H=-317.3kJ/mol
D.2Zn(s)+2Ag2O(s)=====2ZnO(s)+4Ag(s),△H=-317.3kJ
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
則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
(2) 2Ag(s)+1/2 O2(g)== Ag2O(s),ΔH=-31.0kJ/mol
則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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