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CH1012
SOLUBILITY PRODUCT
• The formation
constant is the Kc when the complex is on the RHS of the equilibrium.
Kf = [Ag(NH3)2+] / [Ag+][NH3]2
Kf = [Ag(NH3)2+] / [Ag+][NH3]2
• To work out if a complex will precipitate from soln we use a solubility
product KSP.
• Solubility Product Ksp
compound(s) D ccation(aq) + dligand(aq)
eg. Ni(dmg)2(s) D Ni2+(aq) + 2dmg-(aq)
Ksp = [cation]c[ligand]d equilibrium concs.
This is
defined for a saturated soln. of the compound
& the ions / ligands at a given T.
ie. no more compound can go into solution.
