A、2H++2e→H<sub>2sub> B、Zn→Zn2++2e C、O<sub>2sub>+2H<sub>2sub>O+4e→4OH- D、Mg→Mg2++2e
A、(CH<sub>3sub>)<sub>3sub>C-OH B、CH<sub>3sub>CH<sub>2sub>CHOHCH<sub>3sub> C、CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>CH<sub>2sub>OH
A、φ(Zn2+/Zn)(平) < φ(Fe2+/Fe)(平) B、φ(Zn2+/Zn) < φ(Fe2+/Fe) C、φ(H+/H<sub>2sub>)(平,Zn) < φ(H+/H<sub>2sub>)(平,Fe) D、φ(H+/H<sub>2sub>)(Zn) < φ (H+/H<sub>2sub>)(Fe)
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)