A、Pt,H<sub>2sub>(p1)│HCl(m1)│H<sub>2sub>(p2),Pt B、Pt,H<sub>2sub>(p)│HCl(m1)‖HCl(m2)│H<sub>2sub>(p),Pt C、Pt,H<sub>2sub>(p)│HCl(m1)┆HCl(m2)│H<sub>2sub>(p),Pt D、Pt,H<sub>2sub>(p)│HCl(m1)│AgCl,Ag-Ag,AgCl│HCl(m1) │H<sub>2sub>(p),Pt
A、Pt,H<sub>2sub>(p1)│HCl(m1)│H<sub>2sub>(p2),Pt B、Pt,H<sub>2sub>(p)│HCl(m1)‖HCl(m2)│H<sub>2sub>(p),Pt C、Pt,H<sub>2sub>(p)│HCl(m1)┆HCl(m2)│H<sub>2sub>(p),Pt D、Pt,H<sub>2sub>(p)│HCl(m1)│AgCl,Ag-Ag,AgCl│HCl(m1) │H<sub>2sub>(p),Pt
A、Zn(s)│Zn2+‖Cd2+│Cd(s) B、Zn(s)│Zn2+‖H+│H<sub>2sub>,Pt C、Zn(s)│Zn2+‖I-│I<sub>2sub>,Pt D、Zn(s)│Zn2+‖Ag+│Ag(s)
A、Zn│ZnCl<sub>2sub>(aq)│Cl<sub>2sub>(g)│Pt B、Zn│ZnCl<sub>2sub>(aq)‖KCl(aq)│AgCl(s)│Ag C、Ag│AgCl(s)│KCl(aq)│Cl<sub>2sub>(g)│Pt D、Hg│Hg<sub>2sub>Cl<sub>2sub>(s)│KCl(aq)‖AgNO<sub>3sub>(aq)│Ag
A、∆H<sub>3sub>=∆H<sub>1sub>+∆H<sub>2sub> B、∆H<sub>3sub>=∆H<sub>1sub>-∆H<sub>2sub> C、∆H<sub>3sub>=∆H<sub>2sub>-∆H<sub>1sub> D、∆H<sub>3sub>=2∆H<sub>1sub>-∆H<sub>2sub>