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A question on precipitation reactions

  1. Nov 10, 2012 #1
    My chem text book says that in precipitation reactions you lower the pH of the reaction in order for the precipitate to form quantitatively.

    It doesn't elaborate at all. What is the meaning of precipitate forming quantitatively?
     
  2. jcsd
  3. Nov 11, 2012 #2

    Borek

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    Staff: Mentor

    Quantitatively - you can assume all was precipitated. Qualitatively - only some were precipitated.

    First allows determination of an amount, second determination of the presence.
     
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