01:160:162 Lecture Notes - Lecture 24: Silver Iodide, Lewis Acids And Bases, Lead
25 Jul 2017
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Initially the solution only contains h2o, pb2+ and sr2+ but no cro4. 2 ] slowly increases until it reaches a high enough concentration that pb2+ begins to precipitate out as pbcro4. Begins when q of pbcro4 = ksp of pbcro4. Once all pb2+ precipitates out, additional cro4. 2 ] to slowly increase again until it starts to precipitate out sr2+ as srcro4. Begins when q of srcro4 = ksp of srcro4. Increasing solubility of sparingly soluble solid in general. Solubility of sparingly soluble compound can be increased (in relation to pure water) if the compound is added to a solution that already contains an ion that will react with one of the ions in the compound. According to le chatelier [] of one of compound"s ions is decreased = more of the solid compound will dissolve to maintain equilibrium. Already saw that the solubility of ionic compounds containing basic anions will increase in acidic solution.
