常用參比電極電勢

表7.2.43

常用參比電極電勢及溫度系數(shù)名稱體系E/V，(dE/dT)n氫電極Pt,H2|H+(aH+=l)0.0000飽和甘汞電極IIg,IIg2CI2飽和KCI0.2415-0.761標準甘汞電極Hg,Hg2C12ImolL-lKCl0.2800-0.275O.lmolL-1甘汞電極Hg,Hg2C120.1mol?L-lKCl0.3337-0.875銀?氯化銀電極Ag,AgCl|0.1mol-L-lKCl0.290-0.3皺化汞電極Hg,HgO|0.1mol-L-lKOH0.165硫酸亞汞電極Hg,IIg2SO4|lmol-L-lII2SO40.6758硫酸銅電極Cu|飽和CuSO40316-0.7?25°C：相對于標準氫電極(NHE)o表7.2.44Ag-AgCl,Ag-AgBr,Ag-AgI電極的標準電極電勢單位，V溫度/°cAg-AgClAg-AgBr

Ag-AgI溫度/°cAg-AgClAg-AgBr00.236550.08168

?400.212080.0630250.234310.07994

0.14714450.208350.05997100.231420.07804

0.14810500.204490.05668150.228570.07594

0.14925550.20056200.225570.07379

0.15067600.19649250.222340.07219

0.15230700.18782300.219040.06874

0.15401800.17870350.215650.06604

0.15591900.16950950.16510①以氫電極為參比電極即相當于對NHE。表7.2.45不同溫度下飽和甘汞電極(SCE)的電極電勢v°c\|//V*t/°Cv|//V/00.2568400.2307100.2507500.2233200.2444600.2154250.2412700.2071300.2378*25°C；相對于標準氫電極(NHE)o表7246甘汞電極的電極電勢與溫度的關系甘汞電極*

wvSCE

0.2412-6.16?10-4(t-25)-1.75?10?6(t?25)2?9?10-10(t-25)2NCE

0.2801-2.75率1(M(t?25)—2.50*10-6(t-25)2-4?10-10(t-25)2Table3ComnMMinrfercnkcclcctnxlci.theircorrcspiMuJin^redoxreactionsondcjnJitions.indthepotenhakofthc?reactionsrchtivctothenormalhydrogenckc,tf<xfcElectrodeReactionPotential(xs.NHE巧ReferencesNHEgH*0SCE’mHgHfcCk.KCKsat)0.24121NCE心HgHg2CI2.KCKlMi02*)11SSCE?IlgHg:CI:.NaChnat.)023601Siher.SiKcrchk?rxkAgAgCl.KCIlO.IMi0.2WH23Ag/AgCl.KCI(mL?0.197IAgAgCl.NaCI(3M)0.2%24AgAgCl.NaCKsat)0.IM23Silver-sihernitrate\gAgMh(001Minl'HjlNj0.5423Mervunmcrcun*oxideHgHgO.NM^KO.IMi0.16523Ha/HfO.NM)li(IM)0.H23MercurymercurywhaleHgHg^SO4.K2SO4(0.5Ml0.6?1HgHg2SO4.K2SO4(ttt.)0.M1U,NHK,Normalhydn^nclcm/c.ZSCF.,Saturatedcal