Lecture12 - 3(s ↔ Cr 3(aq 3OH(aq • Saturated solution...

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Solubility Equilibrium Read: Chapter 16 HW: P766 # 9, 11, 13, 19, 21, 23, 25, 29, 33, 37, 39, 49, 55
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Insoluble Salts *saturated at low concentration CaCO 3 (s) ↔ Ca 2+ (aq) + CO 3 2- (aq) PbF 2 (s) ↔ Pb 2+ (aq) + 2 F - (aq) Zn 3 (PO 4 ) 2 (s) ↔ 3 Zn 2+ (aq) + 2 PO 4 3- (aq) *Reactant dominant, very few dissolved ions, small K value
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Solubility Product Constant, K sp Describes equilibrium in a saturated solution of low solubility compound AuCl 3 (s) ↔ Au 3+ (aq) + 3 Cl - (aq) K sp = [Au 3+ ] [Cl - ] 3 = 3.2 x 10 -25
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Dissolving equation? K sp expression? Maximum solubility of AgI(s)? [Ag + ] in saturated solution? [I - ] in saturated solution? AgI(s), K sp = 1.5 x 10 -16
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Dissolving equation? K sp expression? Maximum solubility of Ag 2 CO 3 (s)? [Ag + ] in saturated solution? [CO 3 2- ] in saturated solution? Ag 2 CO 3 (s), K sp = 8.1 x 10 - 12
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PbCl 2 (s) ↔ Pb 2+ (aq) + 2 Cl - (aq) Saturated solution of lead chloride has [Cl - ] of 0.0046 M. [Pb 2+ ] ? Ksp value? Mass PbCl 2 in 0.50 L of saturated solution?
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Cr(OH)
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Unformatted text preview: 3 (s) ↔ Cr 3+ (aq) + 3OH-(aq) • Saturated solution has [OH-] of 1.3 x 10-8 M. • [Cr 2+ ] ? • Ksp value? Salt Formula [Cation] [Anion] Solubility Ksp XY 0.00036 XY 2 0.00036 X 2 Y 0.00036 XY 3 0.00036 X 3 Y 0.00036 X 2 Y 3 0.00036 X 3 Y 2 0.00036 Precipitate Prediction • 0.00036 mol NaCl(s) and 0.00012 mol Au(NO 3 ) 3 (s) added to 0.50 L water. Will AuCl 3 (s) (K sp = 3.2 x 10-25 ) form? Common Ion Effect • Saturated solution of BaSO 4 (aq) is prepared. • Dissolving equation? • K sp expression? • Effect of adding Na 2 SO 4 (s)? • Effect of adding Ba(NO 3 ) 2 ? • Effect of adding KNO 3 ? Common Ion Effect • MnCO 3 , Ksp = 8.8 x 10-11 • Solubility in water? • Solubility in 0.50 M Mn(NO 3 ) 2 (aq)? • Solubility in 0.20 M Na 2 CO 3 (aq)? • Mg(OH) 2 is relatively insoluble water, but is much more soluble in acid. Why? pH Effect...
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This note was uploaded on 08/26/2011 for the course CHEM 104 taught by Professor Quigley during the Spring '08 term at CUNY Hunter.

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Lecture12 - 3(s ↔ Cr 3(aq 3OH(aq • Saturated solution...

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