ABSTRACT
Reaction E°/V As + 3 H+ + 3 e ⇌ AsH3 –0 .608 As2O3 + 6 H+ + 6 e ⇌ 2 As + 3 H2O 0 .234 HAsO2 + 3 H+ + 3 e ⇌ As + 2 H2O 0 .248 AsO2-+ 2 H2O + 3 e ⇌ As + 4 OH-–0 .68 H3AsO4 + 2 H+ + 2 e-⇌ HAsO2 + 2 H2O 0 .560 AsO43-+ 2 H2O + 2 e ⇌ AsO2-+ 4 OH-–0 .71 At2 + 2 e ⇌ 2 At-0 .3 Au+ + e ⇌ Au 1 .692 Au3+ + 2 e ⇌ Au+ 1 .401 Au3+ + 3 e ⇌ Au 1 .498 Au2+ + e – ⇌ Au+ 1 .8 AuOH2+ + H+ + 2 e ⇌ Au+ + H2O 1 .32 AuBr2-+ e ⇌ Au + 2 Br-0 .959 AuBr4-+ 3 e ⇌ Au + 4 Br-0 .854 AuCl4-+ 3 e ⇌ Au + 4 Cl-1 .002 Au(OH)3 + 3 H+ + 3 e ⇌ Au + 3 H2O 1 .45 H2BO3-+ 5 H2O + 8 e ⇌ BH4-+ 8 OH-–1 .24 H2BO3-+ H2O + 3 e ⇌ B + 4 OH-–1 .79 H3BO3 + 3 H+ + 3 e ⇌ B + 3 H2O –0 .8698 B(OH)3 + 7 H+ + 8 e ⇌ BH4-+ 3 H2O –0 .481 Ba2+ + 2 e ⇌ Ba –2 .912 Ba2+ + 2 e ⇌ Ba(Hg) –1 .570 Ba(OH)2 + 2 e ⇌ Ba + 2 OH-–2 .99 Be2+ + 2 e ⇌ Be –1 .847 Be2O32-+ 3 H2O + 4 e ⇌ 2 Be + 6 OH-–2 .63 p-benzoquinone + 2 H+ + 2 e ⇌
hydroquinone 0 .6992
Bi+ + e ⇌ Bi 0 .5 Bi3+ + 3 e ⇌ Bi 0 .308 Bi3+ + 2 e ⇌ Bi+ 0 .2 Bi + 3 H+ + 3 e ⇌ BiH3 –0 .8 BiCl4-+ 3 e ⇌ Bi + 4 Cl-0 .16 Bi2O3 + 3 H2O + 6 e ⇌ 2 Bi + 6 OH-–0 .46 Bi2O4 + 4 H+ + 2 e ⇌ 2 BiO+ + 2 H2O 1 .593 BiO+ + 2 H+ + 3 e ⇌ Bi + H2O 0 .320 BiOCl + 2 H+ + 3 e ⇌ Bi + Cl-+ H2O 0 .1583 Bk4+ + e ⇌ Bk3+ 1 .67 Bk2+ + 2 e ⇌ Bk –1 .6 Bk3+ + e ⇌ Bk2+ –2 .8
