Solubility-107 - Solubility and Simultaneous Equilibrium Chem107 Solubility 2 Summary Solubility product constant K SP Solubility and common-ion

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Unformatted text preview: Solubility and Simultaneous Equilibrium 11/01/11 Chem107, Solubility 2 Summary Solubility product constant, K SP Solubility and common-ion effect Precipitation calculations Complex-ion equilibria 11/01/11 Chem107, Solubility 3 Solubility Equilibria for Salts Solubility of salts differ from each other Solubility product, K sp , is used to express the degree of dissociation of a salt AgCl(s) ↔ Ag + (aq) + Cl- (aq) K sp = [Ag + ][Cl- ] Less soluble salts precipitate before more soluble ones 11/01/11 Chem107, Solubility 4 Calculating K SP from Solubility Solubility of a salt is the amount of solute dissolved in a saturated solution. Example Calculate the K SP of PbF 2 if 2.08x10-3 mol is dissolved in 1 L water at 25 C. Solution PbF 2 ↔ Pb 2+ + 2F- s 2s K SP = (s)(2s) 2 = 4s 3 = 4(2.08x10-3 ) 3 = 3.6x10-8 11/01/11 Chem107, Solubility 5 Calculating Solubility from K SP What is the molar solubility of Ag 2 CO 3 ?...
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This note was uploaded on 11/01/2011 for the course CHEMICAL E CHEM-107 taught by Professor Bilinmiyor during the Spring '11 term at Middle East Technical University.

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Solubility-107 - Solubility and Simultaneous Equilibrium Chem107 Solubility 2 Summary Solubility product constant K SP Solubility and common-ion

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