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 |
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 |