Solubility and Complexation Equilibria Chapter 18.

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Presentation transcript:

Solubility and Complexation Equilibria Chapter 18

Common Ion Effect: The presence of an ion common to a solubility equilibria will decrease solubility of the salt. What is the solubility of PbCl 2 in a M NaCl solution?

Complexation Reactions and Equilibria

What is the [Cu 2+ ] in a solution that starts out as M Cu(NH 3 ) 4 2+ ?

What is the [Cu 2+ ] in a solution that starts out as M Cu(NH 3 ) 4 2+ but is also M in NH 3 ?

Simultaneous Equilibria Effect of pH on solubility of metal hydroxides Using complexation reactions to dissolve salts

pH and Solubility of Metal Hydroxides What is the solubility of Fe(OH) 2 in pure water, pH = 7 buffer, and pH = 9 buffer. K sp = 8.0 x

Complexation and Solubility What is the solubility of AgCl in pure water and in 0.1 M NH 3 solution? K f (Ag(NH 3 ) 2 + = 1.1 x K sp = 1.8 x x = 0.012