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Topic: Best Way to Standardize HCl?  (Read 4040 times)

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Offline GoldShadow

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Best Way to Standardize HCl?
« on: February 28, 2007, 03:27:05 PM »
What is the best method to standardize a ~0.1M solution of HCl?  I was thinking of titrating it with NaOH that has already been standardized with KHP, and using phenolphthalein as an indicator.
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Offline Borek

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Re: Best Way to Standardize HCl?
« Reply #1 on: February 28, 2007, 03:36:57 PM »
Na2B4O7.10H2O (not sure about drying) against methyl red or Na2CO3 (dried for 1h in 270-300 deg C) against methyl orange.

Standardized NaOH should work, but note that these solutions are not stable over time, especially if allowed to contact with air (CO2 absorption).
« Last Edit: February 28, 2007, 03:42:04 PM by Borek »
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