1、第四章8、解:(1)E(MnO 4-/Mn2+) )Fe/(E23该反应自发向右进行。(2) )(PtcH),(Mn),c(O)c(,Fe)(Pt)( 54234213 VEMF 7015(3) = +24/nOE24/nO c/)n(clg2849v.).l( 610518 )V(.EFe/Mn/OF 83072324 9、解: (1) )(ZcZnZn/lg259.)( 2= =0.813(V)760)Ni/(E2 c/)Ni(l)i/( 220= =0.289(V)859.g )V(.).()Zn/(E)i/(MF 52401329022 原电池符号:(-)ZnZn 2+(0.020 )
2、Ni 2+(0.080 )Ni(+)1Lmol Lmol(2) 电极反应: eHOCr6427 OHCr237- = +)r/OC(E327 )/(327E 2314/)(lg0592. cc)V.lg 11605914222 2c/)Cl(p.)Cl/(E)l/C( lg 3010593812 )V(.)/()r/O(MF 21527)(PtLmol(H),ol.(Cr),Lmol.(OCr)Lol(l)KPa(Cl,t)( 11312712 0000110、解:(1) u/E2 c/ugu/259= =0.33(V)234.l(2) = +)C/(2)/( 2059Cucl= +uE2 )
3、S(Kg.spv.l( 701363406(3) )/()/(22HHEpHc/)(lg592v.).(l. 0102(4)加入的 0.1molNaOH 恰好与 0.1molHCl 完全中和, 1701Lmol.)(c)/()/(22HEHpH/)(lg059.2v(l. 410107(5)加入的 0.1molNaAc 恰好与 0.1molHCl 完全反应生成 AcLmol.1 0aKc 13504018 LolcK)H(cHAa)/()/(22Epc/)(lg059.2v(l. 1701340312、解: = +)Ag/(E)g/ABr(E )/(Ag Agcl592.= + Br(Kl.s
4、p0592). s79101345)AgBr(Ksp13、解: 3806522 .).()H/(E)H/(EMF v.)70)/(/(22pc/)(lg09.21507Hcl pH=4.57512Lmol.)H(c缓冲溶液: abKc)( a01725 51072.a16、解:(1) = +)Ag/(E)/(AgAgcl9=+ )v(.).( 4579)/(2Zn cZnZn/l20)/( 22 = =0.78(V).g(360 )V(.).(/(E)Ag/(EMF 5178042 (2) .)Zn67291 52090522059 .)Zn/(g/(.)(nKlg 52176 )molKJ(nFEGmr 1231367148 (3) 2 + Zn 2Ag + Zn2+Ag初浓度 0.10 0.30平衡浓度 x )x.(.102352276502 .x.cKAgZn27105.x 12705Lmol.)Ag(c17、解:(1) )v()MnO/(E163024 .932(2) 、Mn 3+24nO(3)Mn 2+原因: