A.2ZnS+3O2==2ZnO+2SO2↑ B.HgS+O2==Hg↑+SO2↑(加熱) C.HgS+Fe==Hg↑+FeS(加熱) D.HgS+2Na2S==Na4〔HgS3〕 E.HgCl2+2KI(過量)==HgI2↓+2KCl
A.NH3.H2O,S2O32-,CN-,CN- B.CN-,S2O32-,NH3.H2O,CN-
A.ZnCO3 B.ZnCO3·Zn(OH)2 C.ZnO D.Zn(OH)2