LEC 21 CHAP 18 - Lecture 21 The Salt Effect Salt Effect...

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TOUPADAKIS Lecture 21 Chapter 18 Lecture 21 The Salt Effect. Salt Effect Versus Common Ion Effect. Ion Pair Formation: Incomplete Dissociation. Criteria for Precipitation: The Ion Product Q sp . Fractional Precipitation. The pH of the Solution Can Affect Solubility.
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TOUPADAKIS Lecture 21 Chapter 18 The Salt Effect The Salt Effect (or diverse ion effect). – Ionic interactions are important even when an ion is not apparently participating in the equilibrium. – Uncommon ions tend to increase solubility.
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TOUPADAKIS Lecture 21 Chapter 18 Common Ion Effect Versus Salt Effect: Effects on the Solubility of Ag 2 CrO 4
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TOUPADAKIS Lecture 21 Chapter 18 Ion Pair Formation Although the measured solubility of MgF 2 is about 4x10 -3 M, we cannot safely assume that [Mg 2+ ] = 4x10 -3 M, and that [F - ] = 8x10 -3 M, because some of the Mg 2+ and F - ions are involved in ion pairing.
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TOUPADAKIS Lecture 21 Chapter 18 Incomplete Dissociation Assumption that all formula units in solution are
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LEC 21 CHAP 18 - Lecture 21 The Salt Effect Salt Effect...

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