Formation Constants for Complex Ions

Appendices

Equilibrium

K_f

{Al}^{3+} + 6 F^{-} ⇌ {[{AlF}_{6}]}^{3-}

7 × 10¹⁹

{Cd}^{2+} + 4 {NH}_{3} ⇌ {[Cd {({NH}_{3})}_{4}]}^{2 +}

1.3 × 10⁷

{Cd}^{2+} + 4 {CN}^{-} ⇌ {[Cd {(CN)}_{4}]}^{2 -}

3 × 10¹⁸

{Co}^{2+} + 6 {NH}_{3} ⇌ {[Co {({NH}_{3})}_{6}]}^{2 +}

1.3 × 10⁵

{Co}^{3+} + 6 {NH}_{3} ⇌ {[Co {({NH}_{3})}_{6}]}^{3+}

2.3 × 10³³

{Cu}^{+} + 2 CN ⇌ {[Cu {(CN)}_{2}]}^{-}

1.0 × 10¹⁶

{Cu}^{2+} + 4 {NH}_{3} ⇌ {[Cu {({NH}_{3})}_{4}]}^{2+}

1.7 × 10¹³

{Fe}^{2+} + 6 {CN}^{-} ⇌ {[Fe {(CN)}_{6}]}^{4 -}

1.5 × 10³⁵

{Fe}^{3+} + 6 {CN}^{-} ⇌ {[Fe {(CN)}_{6}]}^{3 -}

2 × 10⁴³

{Fe}^{3+} + 6 {SCN}^{-} ⇌ {[Fe {(SCN)}_{6}]}^{3 -}

3.2 × 10³

{Hg}^{2+} + 4 {Cl}^{-} ⇌ {[{HgCl}_{4}]}^{2 -}

1.1 × 10¹⁶

{Ni}^{2+} + 6 {NH}_{3} ⇌ {[Ni {({NH}_{3})}_{6}]}^{2+}

2.0 × 10⁸

{Ag}^{+} + 2 {Cl}^{-} ⇌ {[{AgCl}_{2}]}^{-}

1.8 × 10⁵

{Ag}^{+} + 2 {CN}^{-} ⇌ {[Ag {(CN)}_{2}]}^{-}

1 × 10²¹

{Ag}^{+} + 2 {NH}_{3} ⇌ {[Ag {({NH}_{3})}_{2}]}^{+}

1.7 × 10⁷

{Zn}^{2+} + 4 {CN}^{-} ⇌ {[Zn {(CN)}_{4}]}^{2 -}

2.1 × 10⁹

{Zn}^{2+} + 4 {OH}^{-} ⇌ {[Zn {(OH)}_{4}]}^{2 -}

2 × 10¹⁵

{Fe}^{3+} + {SCN}^{-} ⇌ {[Fe (SCN)]}^{2+}

8.9 × 10²

{Ag}^{+} + 4 {SCN}^{-} ⇌ {[Ag {(SCN)}_{4}]}^{3 -}

1.2 × 10¹⁰

{Pb}^{2+} + 4 I^{-} ⇌ {[{PbI}_{4}]}^{2 -}

3.0 × 10⁴

{Pt}^{2+} + 4 {Cl}^{-} ⇌ {[{PtCl}_{4}]}^{2 -}

1 × 10¹⁶

{Cu}^{2+} + 4 CN ⇌ {[Cu {(CN)}_{4}]}^{2 -}

1.0 × 10²⁵

{Co}^{2+} + 4 {SCN}^{-} ⇌ {[Co {(SCN)}_{4}]}^{2 -}

1 × 10³

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