Solubility and Complexation Equilibria

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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 PbCl2 in a 0.200 M NaCl solution?

Complexation Reactions and Equilibria

What is the [Cu2+] in a solution that starts out as 0.100 M Cu(NH3)42+?

What is the [Cu2+] in a solution that starts out as 0 What is the [Cu2+] in a solution that starts out as 0.100 M Cu(NH3)42+ but is also 0.100 M in NH3?

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. Ksp = 8.0 x 10-16

Complexation and Solubility What is the solubility of AgCl in pure water and in 0.1 M NH3 solution? Kf(Ag(NH3)2+ = 1.1 x 10-7 Ksp = 1.8 x 10-10 x = 0.012