Honors Chemistry II
SOLUBILITY EQUILIBRIUM
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Ionic solids dissolve in water until they are in equilibrium with their _______________.
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This means that ionic solids are in equilibrium with their ions when a _______________
solution is created.
o The equilibrium expression can be used to…
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determine the _______________ _______________
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and predict whether a _______________ reaction occurs or not.
Solubility is defined (in terms of equilibrium) as the _______________ of a compound in
a solution that is in _______________ with a solid phase at a specific _______________.
Solubility Product
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A _______________ solution is the maximum amount of solute dissolved into a specific
amount of solvent at a given temperature.
o This doesn’t mean the solution is _______________...
o It could be _______________ or _______________, depending on the
_______________ of the solute
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Example:
o Silver Chloride dissolved in water
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Write the equation:
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Write the equilibrium expression:
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Eliminate pure substances  they cannot be expressed with
concentration
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Solubility equilibrium expression:
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Also known as the Solubility Product Constant expression:
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Ksp =
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Example:
o Write the solubility product constant expression for the dissolving of calcium
fluoride in water.
Ksp Determination
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Determined from solubility data. You need the CRC Aqueous Solubility Handout
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Example:
o Determine the solubility product constant for barium nitrite at 10˚C.