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Tabela de Potenciais_padroes
1
EC | Rev. 0.5 Potenciais padrões a 25°C. Meia-reação de redução E°/V Meia-reação de redução E°/V F 2 (g) + 2e – ⇄ 2F – (aq) +2,890 MnO 2 (s) + H 2 O(l) + e - ⇄ MnOOH(s) + OH - (aq) +0,15 O 3 (g) + 2H + (aq) + 2e – ⇄ O 2 (g) + H 2 O(l) +2,075 Sn 4+ (aq) + 2e – ⇄ Sn 2+ (aq) +0,15 Co 3+ (aq) + e – ⇄ Co 2+ (aq) +1,92 HgO(s) + H 2 O(l) + 2e - ⇄ Hg(l) + 2OH - (aq) +0,098 Au + (aq) + e – ⇄ Au(s) +1,83 AgBr(s) + e – ⇄ Ag(s) + Br – (aq) +0,0713 H 2 O 2 (aq) + 2H + (aq) + 2e – ⇄ 2H 2 O(l) +1,763 2H + (aq) + 2e – ⇄ H 2 (g) 0 Ce 4+ (aq) + e – ⇄ Ce 3+ (aq) +1,72 Fe 3+ (aq) + 3e – ⇄ Fe(s) –0,036 Pb 4+ (aq) + 2e – ⇄ Pb 2+ (aq) +1,69 O 2 (g) + H 2 O(l) + 2e – ⇄ HO 2 – (aq) + OH – (aq) –0,098 PbO 2 (s) + SO 4 2– (aq) + 4H + (aq) + 2e – ⇄ PbSO 4 (s) + 2H 2 O(l) +1,685 Pb 2+ (aq) + 2e – ⇄ Pb(s) –0,126 2NO(g) + 4H + (aq) + 4e - ⇄ N 2 (g) + 2H 2 O(l) +1,678 In + (aq) + e – ⇄ In(s) –0,126 2HClO(aq) + 2H + (aq) + 2e – ⇄ Cl 2 (g) + 2H 2 O(l) +1,630 Sn 2+ (aq) + 2e – ⇄ Sn(s) –0,141 2HBrO(aq) + 2H + (aq) + 2e – ⇄ Br 2 (l) + 2H 2 O(l) +1,604 NO 3 - (aq) + H 2 O(l) + e - ⇄ NO(g) + 2OH - (aq) -0,149 Mn 3+ (aq) + e – ⇄ Mn 2+ (aq) +1,56 AgI(s) + e – ⇄ Ag(s) + I – (aq) –0,1519 Au 3+ (aq) + 3e – ⇄ Au(s) +1,52 Ni 2+ (aq) + 2e – ⇄ Ni(s) –0,236 MnO 4 – (aq) + 8H + (aq) + 5e – ⇄ Mn 2+ (aq) + 4H 2 O(l) +1,507 MnOOH(s) + H 2 O(l) + e - ⇄ Mn(OH) 2 (s) + OH - (aq) -0,24 PbO 2 (s) + 4H + (aq) + 2e – ⇄ Pb 2+ (aq) + 2H 2 O(l) +1,458 CH 3 OH(aq) + H 2 O(l) + 2e - ⇄ CH 4 (g) + 2OH - (aq) -0,245 Cl 2 (g) + 2e – ⇄ 2Cl – (aq) +1,3604 V 3+ (aq) + e – ⇄ V 2+ (aq) –0,255 Au 3+ (aq) + 2e – ⇄ Au + (aq) +1,36 Co 2+ (aq) + 2e – ⇄ Co(s) –0,282 Cr 2 O 7 2– (aq) + 14H + (aq) + 6e – ⇄ 2Cr 3+ (aq) + 7H 2 O(l) +1,36 Tl + (aq) + e – ⇄ Tl(s) –0,336 O 3 (g) + H 2 O(l) + 2e – ⇄ O 2 (g) + 2OH – (aq) +1,247 In 3+ (aq) + 3e – ⇄ In(s) –0,338 Tl 3+ (aq) + 2e – ⇄ Tl + (aq) +1,280 PbSO 4 (s) + 2e – ⇄ Pb(s) + SO 4 2– (aq) –0,3586 MnO 2 (s) + 4H + (aq) + 2e – ⇄ Mn 2+ (aq) + H 2 O(l) +1,230 Cd 2+ (aq) + 2e – ⇄ Cd(s) –0,402 O 2 (g) + 4H + (aq) + 4e – ⇄ 2H 2 O(l) +1,2291 Cr 3+ (aq) + e – ⇄ Cr 2+ (aq) –0,42 ClO 4 – (aq) + 2H + (aq) + 2e – ⇄ ClO 3 – (aq) + H 2 O(l) +1,226 Fe 2+ (aq) + 2e – ⇄ Fe(s) –0,44 Pt 2+ (aq) + 2e – ⇄ Pt(s) +1,18 In 3+ (aq) + 2e – ⇄ In + (aq) –0,444 Br 2 (aq) + 2e – ⇄ 2Br – (aq) +1,098 Ga 3+ (aq) + 3e – ⇄ Ga(s) –0,549 Br 2 (g) + 2e – ⇄ 2Br – (aq) +1,094 Se(s) + 2e - ⇄ Se 2- (aq) -0,67 Br 2 (l) + 2e – ⇄ 2Br – (aq) +1,078 Sb 2 O 3 (s) + 3H 2 O(l) + 6e – ⇄ 2Sb(s) + 6OH – (aq) -0,681 MnO 2 (s) + H + (aq) + e – ⇄ MnOOH(s) +0,98 Ni(OH) 2 (s) + 2e - ⇄ Ni(s) + 2OH - (aq) -0,714 NO 3 – (aq) + 4H + (aq) + 3e – ⇄ NO(g) + 2H 2 O(l) +0,955 Cr 3+ (aq) + 3e – ⇄ Cr(s) –0,733 Pd 2+ (aq) + 2e – ⇄ Pd(s) +0,915 N 2 (g) + 6H 2 O(l) + 6e - ⇄ 2NH 3 (aq) + 6OH - (aq) -0,736 2Hg 2+ (aq) + 2e – ⇄ Hg 2 2+ (aq) +0,908 Zn 2+ (aq) + 2e – ⇄ Zn(s) –0,762 ClO – (aq) + H 2 O(l) + 2e – ⇄ Cl – (aq) + 2OH – (aq) +0,890 Cd(OH) 2 (s) + 2e - ⇄ Cd(s) + 2OH - (aq) -0,826 Hg 2+ (aq) + 2e – ⇄ Hg(l) +0,852 2H 2 O(l) + 2e – ⇄ H 2 (g) + 2OH – (aq) –0,8280 2NO(g) + 2H 2 O(l) + 4e - ⇄ N 2 (g) + 4OH - (aq) +0,850 Cr 2+ (aq) + 2e – ⇄ Cr(s) –0,89 Ag + (aq) + e – ⇄ Ag(s) +0,7993 V 2+ (aq) + 2e – ⇄ V(s) –1,125 Hg 2 2+ (aq) + 2e – ⇄ 2Hg(l) +0,796 Mn 2+ (aq) + 2e – ⇄ Mn(s) –1,182 NO 3 – (aq) + 2H + (aq) + e – ⇄ NO 2 (aq) + H 2 O(l) +0,773 Zn(OH) 2 (s) + 2e - ⇄ Zn(s) + 2OH - (aq) -1,249 Fe 3+ (aq) + e – ⇄ Fe 2+ (aq) +0,771 ZnO(s) + H 2 O(l) + 2e - ⇄ Zn(s) + 2OH - (aq) -1,260 Tl 3+ (aq) + 3e – ⇄ Tl(s) +0,741 Ti 3+ (aq) + 3e – ⇄ Ti(s) –1,37 BrO – (aq) + H 2 O(l) + 2e – ⇄ Br – (aq) + 2OH – (aq) +0,766 Zr 4+ (aq) + 4e – ⇄ Zr(s) –1,45 Hg 2 SO 4 (s) + 2e – ⇄ 2Hg(l) + SO 4 2– (aq) +0,6158 Al 3+ (aq) + 3e – ⇄ Al(s) –1,677 MnO 4 2– (aq) + 2H 2 O(l) + 2e – ⇄ MnO 2 (s) + 4OH – (aq) +0,60 Be 2+ (aq) + 2e – ⇄ Be(s) –1,968 MnO 4 – (aq) + e – ⇄ MnO 4 2– (aq) +0,56 Sc 3+ (aq) + 3e – ⇄ Sc(s) –2,09 CH 3 OH(aq) + 2H + (aq) + 2e - ⇄ CH 4 (g) + H 2 O(l) +0,583 2Li + (aq) + H 2 (g) + 2e - ⇄ 2LiH(s) -2,331 I 2 (s) + 2e – ⇄ 2I – (aq) +0,535 Al 2 O 3 (s) + 3H 2 O(l) + 6e - ⇄ 2Al(s) + 6OH - (aq) -2,332 NiOOH(s) + H 2 O(l) + e – ⇄ Ni(OH) 2 (s) + OH – (aq) +0,52 Al(OH) 3 (s) + 3e - ⇄ Al(s) + 3OH - (aq) -2,338 Cu + (aq) + e – ⇄ Cu(s) +0,518 Mg 2+ (aq) + 2e – ⇄ Mg(s) –2,360 ReO 4 – (aq) + 4H + (aq) + 3e – ⇄ ReO 2 (s) + 2H 2 O(l) +0,510 2Na + (aq) + H 2 (g) + 2e - ⇄ 2NaH(s) -2,367 Ag 2 CrO 4 (s) + 2e – ⇄ 2Ag(s) + CrO 4 2– (aq) +0,4470 La 3+ (aq) + 3e – ⇄ La(s) –2,379 O 2 (g) + 2H 2 O(l) + 4e – ⇄ 4OH – (aq) +0,4011 Y 3+ (aq) + 3e – ⇄ Y(s) –2,38 ClO 4 – (aq) + H 2 O(l) + 2e – ⇄ ClO 3 – (aq) + 2OH – (aq) +0,398 Be(OH) 4 2– (aq) + 2e – ⇄ Be(s) + 4OH – (aq) –2,517 [Fe(CN) 6 ] 3– (aq) + e – ⇄ [Fe(CN) 6 ] 4– (aq) +0,361 MgO(s) + H 2 O(l) + 2e - ⇄ Mg(s) + 2OH - (aq) -2,550 Cu 2+ (aq) + 2e – ⇄ Cu(s) +0,339 Na + (aq) + e – ⇄ Na(s) –2,7143 Cr 2 O 7 2- (aq) + 14H + (aq) + 12e - ⇄ 2Cr(s) + 7H 2 O(l) +0,310 Ca 2+ (aq) + 2e – ⇄ Ca(s) –2,868 Bi 3+ (aq) + 3e – ⇄ Bi(s) +0,308 Sr 2+ (aq) + 2e – ⇄ Sr(s) –2,899 Hg 2 Cl 2 (s) + 2e – ⇄ 2Hg(l) + 2Cl – (aq) +0,2682 Ba 2+ (aq) + 2e – ⇄ Ba(s) –2,906 AgCl(s) + e – ⇄ Ag(s) + Cl – (aq) +0,2224 K + (aq) + e – ⇄ K(s) –2,936 CO 2 (g) + 8H + (aq) + 8e - ⇄ CH 4 (g) + 2H 2 O(l) +0,1694 Rb + (aq) + e – ⇄ Rb(s) –2,943 Cu 2+ (aq) + e – ⇄ Cu + (aq) +0,161 Li + (aq) + e – ⇄ Li(s) –3,040 Para uso nas aulas de Eletroquímica e Corrosão
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Transcript of Tabela de Potenciais_padroes
EC | Rev. 0.5
Potenciais padrões a 25°C. Meia-reação de redução E°/V Meia-reação de redução E°/V F2(g) + 2e– ⇄ 2F–(aq) +2,890 MnO2(s) + H2O(l) + e− ⇄ MnOOH(s) + OH−(aq) +0,15 O3(g) + 2H+(aq) + 2e– ⇄ O2(g) + H2O(l) +2,075 Sn4+(aq) + 2e– ⇄ Sn2+(aq) +0,15 Co3+(aq) + e– ⇄ Co2+(aq) +1,92 HgO(s) + H2O(l) + 2e− ⇄ Hg(l) + 2OH−(aq) +0,098 Au+(aq) + e– ⇄ Au(s) +1,83 AgBr(s) + e– ⇄ Ag(s) + Br–(aq) +0,0713 H2O2(aq) + 2H+(aq) + 2e– ⇄ 2H2O(l) +1,763 2H+(aq) + 2e– ⇄ H2(g) 0 Ce4+(aq) + e– ⇄ Ce3+(aq) +1,72 Fe3+(aq) + 3e– ⇄ Fe(s) –0,036 Pb4+(aq) + 2e– ⇄ Pb2+(aq) +1,69 O2(g) + H2O(l) + 2e– ⇄ HO2
–(aq) + OH–(aq) –0,098 PbO2(s) + SO4
2–(aq) + 4H+(aq) + 2e– ⇄ PbSO4(s) + 2H2O(l)
+1,685 Pb2+(aq) + 2e– ⇄ Pb(s) –0,126
2NO(g) + 4H+(aq) + 4e− ⇄ N2(g) + 2H2O(l) +1,678 In+(aq) + e– ⇄ In(s) –0,126 2HClO(aq) + 2H+(aq) + 2e– ⇄ Cl2(g) + 2H2O(l) +1,630 Sn2+(aq) + 2e– ⇄ Sn(s) –0,141 2HBrO(aq) + 2H+(aq) + 2e– ⇄ Br2(l) + 2H2O(l) +1,604 NO3
−(aq) + H2O(l) + e− ⇄ NO(g) + 2OH−(aq) −0,149 Mn3+(aq) + e– ⇄ Mn2+(aq) +1,56 AgI(s) + e– ⇄ Ag(s) + I–(aq) –0,1519 Au3+(aq) + 3e– ⇄ Au(s) +1,52 Ni2+(aq) + 2e– ⇄ Ni(s) –0,236
MnO4–(aq) + 8H+(aq) + 5e– ⇄ Mn2+(aq) + 4H2O(l) +1,507
MnOOH(s) + H2O(l) + e− ⇄ Mn(OH)2(s) + OH−(aq)
−0,24
PbO2(s) + 4H+(aq) + 2e– ⇄ Pb2+(aq) + 2H2O(l) +1,458 CH3OH(aq) + H2O(l) + 2e− ⇄ CH4(g) + 2OH−(aq) −0,245 Cl2(g) + 2e– ⇄ 2Cl–(aq) +1,3604 V3+(aq) + e– ⇄ V2+(aq) –0,255 Au3+(aq) + 2e– ⇄ Au+(aq) +1,36 Co2+(aq) + 2e– ⇄ Co(s) –0,282 Cr2O7
2–(aq) + 14H+(aq) + 6e– ⇄ 2Cr3+(aq) + 7H2O(l) +1,36 Tl+(aq) + e– ⇄ Tl(s) –0,336 O3(g) + H2O(l) + 2e– ⇄ O2(g) + 2OH–(aq) +1,247 In3+(aq) + 3e– ⇄ In(s) –0,338 Tl3+(aq) + 2e– ⇄ Tl+(aq) +1,280 PbSO4(s) + 2e– ⇄ Pb(s) + SO4
2–(aq) –0,3586 MnO2(s) + 4H+(aq) + 2e– ⇄ Mn2+(aq) + H2O(l) +1,230 Cd2+(aq) + 2e– ⇄ Cd(s) –0,402 O2(g) + 4H+(aq) + 4e– ⇄ 2H2O(l) +1,2291 Cr3+(aq) + e– ⇄ Cr2+(aq) –0,42 ClO4
–(aq) + 2H+(aq) + 2e– ⇄ ClO3–(aq) + H2O(l) +1,226 Fe2+(aq) + 2e– ⇄ Fe(s) –0,44
Pt2+(aq) + 2e– ⇄ Pt(s) +1,18 In3+(aq) + 2e– ⇄ In+(aq) –0,444 Br2(aq) + 2e– ⇄ 2Br–(aq) +1,098 Ga3+(aq) + 3e– ⇄ Ga(s) –0,549 Br2(g) + 2e– ⇄ 2Br–(aq) +1,094 Se(s) + 2e− ⇄ Se2−(aq) −0,67 Br2(l) + 2e– ⇄ 2Br–(aq) +1,078 Sb2O3(s) + 3H2O(l) + 6e– ⇄ 2Sb(s) + 6OH–(aq) −0,681 MnO2(s) + H+(aq) + e– ⇄ MnOOH(s) +0,98 Ni(OH)2(s) + 2e− ⇄ Ni(s) + 2OH−(aq) −0,714 NO3
–(aq) + 4H+(aq) + 3e– ⇄ NO(g) + 2H2O(l) +0,955 Cr3+(aq) + 3e– ⇄ Cr(s) –0,733 Pd2+(aq) + 2e– ⇄ Pd(s) +0,915 N2(g) + 6H2O(l) + 6e− ⇄ 2NH3(aq) + 6OH−(aq) −0,736 2Hg2+(aq) + 2e– ⇄ Hg2
2+(aq) +0,908 Zn2+(aq) + 2e– ⇄ Zn(s) –0,762 ClO–(aq) + H2O(l) + 2e– ⇄ Cl–(aq) + 2OH–(aq) +0,890 Cd(OH)2(s) + 2e− ⇄ Cd(s) + 2OH−(aq) −0,826 Hg2+(aq) + 2e– ⇄ Hg(l) +0,852 2H2O(l) + 2e– ⇄ H2(g) + 2OH–(aq) –0,8280 2NO(g) + 2H2O(l) + 4e− ⇄ N2(g) + 4OH−(aq) +0,850 Cr2+(aq) + 2e– ⇄ Cr(s) –0,89 Ag+(aq) + e– ⇄ Ag(s) +0,7993 V2+(aq) + 2e– ⇄ V(s) –1,125 Hg2
2+(aq) + 2e– ⇄ 2Hg(l) +0,796 Mn2+(aq) + 2e– ⇄ Mn(s) –1,182 NO3
–(aq) + 2H+(aq) + e– ⇄ NO2(aq) + H2O(l) +0,773 Zn(OH)2(s) + 2e− ⇄ Zn(s) + 2OH−(aq) −1,249 Fe3+(aq) + e– ⇄ Fe2+(aq) +0,771 ZnO(s) + H2O(l) + 2e− ⇄ Zn(s) + 2OH−(aq) −1,260 Tl3+(aq) + 3e– ⇄ Tl(s) +0,741 Ti3+(aq) + 3e– ⇄ Ti(s) –1,37 BrO–(aq) + H2O(l) + 2e– ⇄ Br–(aq) + 2OH–(aq) +0,766 Zr4+(aq) + 4e– ⇄ Zr(s) –1,45 Hg2SO4(s) + 2e– ⇄ 2Hg(l) + SO4
2–(aq) +0,6158 Al 3+(aq) + 3e– ⇄ Al(s) –1,677 MnO4
2–(aq) + 2H2O(l) + 2e– ⇄ MnO2(s) + 4OH–(aq) +0,60 Be2+(aq) + 2e– ⇄ Be(s) –1,968 MnO4
–(aq) + e– ⇄ MnO42–(aq) +0,56 Sc3+(aq) + 3e– ⇄ Sc(s) –2,09
CH3OH(aq) + 2H+(aq) + 2e− ⇄ CH4(g) + H2O(l) +0,583 2Li+(aq) + H2(g) + 2e− ⇄ 2LiH(s) −2,331 I2(s) + 2e– ⇄ 2I–(aq) +0,535 Al 2O3(s) + 3H2O(l) + 6e− ⇄ 2Al(s) + 6OH−(aq) −2,332 NiOOH(s) + H2O(l) + e– ⇄ Ni(OH)2(s) + OH–(aq) +0,52 Al(OH)3(s) + 3e− ⇄ Al(s) + 3OH−(aq) −2,338 Cu+(aq) + e– ⇄ Cu(s) +0,518 Mg2+(aq) + 2e– ⇄ Mg(s) –2,360 ReO4
–(aq) + 4H+(aq) + 3e– ⇄ ReO2(s) + 2H2O(l) +0,510 2Na+(aq) + H2(g) + 2e− ⇄ 2NaH(s) −2,367 Ag2CrO4(s) + 2e– ⇄ 2Ag(s) + CrO4
2–(aq) +0,4470 La3+(aq) + 3e– ⇄ La(s) –2,379 O2(g) + 2H2O(l) + 4e– ⇄ 4OH–(aq) +0,4011 Y3+(aq) + 3e– ⇄ Y(s) –2,38 ClO4
–(aq) + H2O(l) + 2e– ⇄ ClO3–(aq) + 2OH–(aq) +0,398 Be(OH)4
2–(aq) + 2e– ⇄ Be(s) + 4OH–(aq) –2,517 [Fe(CN)6]
3–(aq) + e– ⇄ [Fe(CN)6]4–(aq) +0,361 MgO(s) + H2O(l) + 2e− ⇄ Mg(s) + 2OH−(aq) −2,550
Cu2+(aq) + 2e– ⇄ Cu(s) +0,339 Na+(aq) + e– ⇄ Na(s) –2,7143 Cr2O7
2−(aq) + 14H+(aq) + 12e− ⇄ 2Cr(s) + 7H2O(l) +0,310 Ca2+(aq) + 2e– ⇄ Ca(s) –2,868 Bi3+(aq) + 3e– ⇄ Bi(s) +0,308 Sr2+(aq) + 2e– ⇄ Sr(s) –2,899 Hg2Cl2(s) + 2e– ⇄ 2Hg(l) + 2Cl–(aq) +0,2682 Ba2+(aq) + 2e– ⇄ Ba(s) –2,906 AgCl(s) + e– ⇄ Ag(s) + Cl–(aq) +0,2224 K+(aq) + e– ⇄ K(s) –2,936 CO2(g) + 8H+(aq) + 8e− ⇄ CH4(g) + 2H2O(l) +0,1694 Rb+(aq) + e– ⇄ Rb(s) –2,943 Cu2+(aq) + e– ⇄ Cu+(aq) +0,161 Li +(aq) + e– ⇄ Li(s) –3,040 Para uso nas aulas de Eletroquímica e Corrosão
