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  • bonkysleuth
    bonkysleuth's Avatar
    266 posts since Mar '07
    • 15 Jun `08, 6:22PM

      Does anyone know the key source of experimental error when conducting precipitation and acid with an excess base, metal or carbonate? I have trouble spotting them

  • 4794
    4794's Avatar
    324 posts since Nov '06
  • secretliker
    secretliker's Avatar
    174 posts since Dec '06
    • 16 Jun `08, 11:15PM

      For those experiments with gaseous products, like acid with metal or carbonate, perhaps the method of collection of gas could have error?

  • MrSean
    MrSean's Avatar
    146 posts since May '08
    • 20 Jun `08, 4:26AM

      Hmm you confuse me... You say excess base/metal/carbonate which suggests you are talking about obtaining a soluble salt that does not have potassium, sodium or ammonium ions, but you also said precipitation.... Anyway, I shall answer to the former because it is most likely....

      Key source of experimental error... You may not have stirred the mixture well enough or heated it for sufficient time to increase reaction rate. As such the solution may still contain some amount of acid and not all of it may have reacted. Therefore there may be some amount of contamination.

      That's the best I could come up with. >_>

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