. 55 507 34.⑴E=E Θ-n 0591 .0 lgQ即 E=E Θ-2 0591 .0 lg422 232][][ ] ][[ ????H VO V Pb 0. 670 =E Θ-2 0591 .0 lg42 25)10 .0()10 .0( )10 0.1 )(010 .0( ?? E Θ=0. 493 (v) E Θ= ?Θ(VO /V)- ?Θ(Pb / Pb)=0. 493 ?Θ(VO /V)=0. 493 -0. 126 =0. 367 (v) ⑵ lgK Θ=0591 .0 ?nE =0592 .0 493 .02?= 16.7 K Θ=5.0× 10 16 35.⑴ Pt, Cl 2(p Θ)│ Cl - (1. 0 mol · L -1)║ MnO -4 (1. 0 mol · L -1), Mn 2 + (1. 0 mol · L -1), H + (1.0 mol ·L -1)│ Pt ⑵正极反应 MnO 4 -+8H ++5e -= Mn 2 ++4H 2O 负极反应 2 Cl --2e -= Cl 2 电池反应 2 MnO 4 -+ 10 Cl -+ 16H +=2 Mn 2 ++5 Cl 2+8H 2O ⑶E Θ=?Θ( MnO -4 / Mn )-?Θ( Cl/ Cl)=1. 51-01. 36=0. 15 (v) Δ rG m Θ=-nFE Θ=- 10× 96500 ×0. 15 =- 145 (kJ · mol -1) lgK Θ=0591 .0 ?nE =0591 .0 15 .010?= 25. 38 K Θ=2.4× 10 25 ⑷E=E Θ-n 0591 .0 lgQ即 E=E Θ- 10 0591 .0 lg16][ 1 ?H =0. 15- 10 0591 .0 lg16)01 .0( 1 =- 0. 039 (v)