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<center><b>Solubility Equilibria Problem Set</b></center> <br> <br> 1. What is the molar solubility of aluminum hydroxide and equilibrium concentration of the ions of this compound if the K<sub>sp</sub> = 5.0E-33?<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> 2. What is the K<sub>sp</sub> of barium sulfate if the solubility of this compound is 9.09E-4 g per 100.ml of solution? (Hint: is there a problem with the units as written)<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> Answer: 1)[Al(OH)<sub>3</sub>]<sub>(s)</sub>=[Al<sup>+3</sup>]=3.7E-9M , [OH<sup>-</sup>]=1.1E-8M 2) K<sub>sp</sub>=1.52E-9 (units M<sup>2</sup>)
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