acids_and_bases_L3_Spring2008

acids_and_bases_L3_Spring2008 - 1 Quiz Quiz 2 Solubility...

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Unformatted text preview: 1 Quiz Quiz 2 Solubility Equilibria Solubility Equilibria Solubility is the amount (grams) of substance that Solubility is the amount (grams) of substance that dissolves to form a saturated solution. dissolves to form a saturated solution. Molar solubility is the number of moles of solute Molar solubility is the number of moles of solute dissolving to form a liter of saturated solution. dissolving to form a liter of saturated solution. In general: the solubility product ( In general: the solubility product ( Ksp Ksp ) is the molar ) is the molar concentration of ions raised to their concentration of ions raised to their stoichiometric stoichiometric powers. powers. 3 Solubility Equilibria Solubility Equilibria Solubility Solubility-Product Constant, Product Constant, K sp sp Consider for which K sp is the solubility product. (BaSO 4 is ignored because it is a pure solid so its concentration is constant.) BaSO 4 ( s ) Ba 2+ ( aq ) + SO 4 2- ( aq ) ] SO ][ Ba [- 2 4 2 + = sp K 4 Solubility Equilibria Solubility Equilibria Solubility Solubility-Product Constant, Product Constant, Ksp Ksp What are the expressions for the solubility product for the following: FePO 4 Cr(OH) 3 K sp expressions are based on a balanced equation 3 3 4 4 3 3 4 ( ) ( ) ( ) sp FePO s Fe aq PO aq K F e P O + + + = ZZX YZZ ( ) 3 3 3 3 ( ) ( ) 3 ( ) sp Cr OH s Cr aq OH aq K C r O H + + + = ZZX YZZ 5 Solubility Equilibria Solubility Equilibria Caution: Interionic Interionic attractions can make the effective attractions can make the effective concentration of an ion different from its concentration of an ion different from its stoichiometric stoichiometric concentration....
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acids_and_bases_L3_Spring2008 - 1 Quiz Quiz 2 Solubility...

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