A.AgI(s)〡I-〡Cl-〡AgCl(s) B.AgI(s)〡I-〡〡Cl-〡AgCl(s) C.Ag(s),AgCl(s)〡Cl-〡〡I-〡AgI(s),Ag(s) D.Ag(s),AgI(s)〡I-〡〡Cl-〡AgCl(s),Ag(s)
A.E2=-2E1 B.E2=2E1 C.E2=-E1 D.E2=E1
A.Zn〡ZnCl2(aq)〡Cl2(p),Pt B.Zn〡ZnCl2(aq)〡KCl(aq)〡AgCl,Ag C.Ag-AgCl〡KCl(aq)〡Cl2(p),Pt D.Pt,H2(p)〡HCl(aq)〡Cl2(p),Pt