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Omg Chem Titration help fast

  1. Nov 30, 2006 #1
    omg Chem Titration help fast!!!!

    Ok so I'm a gr11 student who just had a titration exeriment.. and there are a couple of things that are really screwing me over!

    Okay so we used an indicator, Phenolphthalein, more specifically, and when we stopped the titration when it turned light pink.

    My question is, why are only 1~2 drops in indicator used?

    I thought that it would be because of the indicator itself would also react with the acids and bases.....but I just need some clarification here.. Can someone help me out here?
     
  2. jcsd
  3. Dec 1, 2006 #2

    GCT

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    You only need that much to make the qualitative assessment; the indicator has a high molar absorptivity.
     
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