已知: (1)Zn(s)+1/2O2(g) = ZnO(s)△H =-348.
题型:选择题
问题:
已知:
(1)Zn(s)+1/2O2(g) = ZnO(s) △H =-348.3 kJ/mol
(2) 2Ag(s)+1/2O2(g) = Ag2O(s) △H =-31.0 kJ/mol
则Zn(s)+Ag2O(s) = ZnO(s)+2Ag(s)的△H等于( )
A.-317.3 kJ/mol
B.-379.3 kJ/mol
C.-332.8 kJ/mol
D.317.3 kJ/mol