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use of indicator in titrations
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Topic: use of indicator in titrations (Read 2970 times)
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cuongt
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use of indicator in titrations
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on:
February 24, 2007, 04:06:33 AM »
im just wondering y is it important to only use a few drops of indicator in titrations. is it because the end point would change or would it be the colour.
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Borek
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Re: use of indicator in titrations
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Reply #1 on:
February 24, 2007, 04:11:43 AM »
Both. Plus in the case of one-color indicator (like phenolphthalein) titration results depend on the indicator concentration.
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
titrations.info
Yggdrasil
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Re: use of indicator in titrations
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Reply #2 on:
February 24, 2007, 12:40:29 PM »
Most indicators are themselves weak acid/bases, so if their concentration is non-negilgible, they can affect the endpoint of the titration.
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use of indicator in titrations