How to titrate a mixture of sulfuric acid and oxalic acid separately
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I would like to ask the seniors: what is the best method for separately titrating a mixture of sulfuric acid and oxalic acid?
Barium chloride is used to titrate the sulfate ions; the concentration of sulfuric acid can be determined from the amount of barium used. Continue to titrate hydrogen ions with sodium hydroxide, subtracting the amount of sulfuric acid to determine the amount of oxalic acid. I’m making this up; this should work as barium oxalate is not a precipitate
I really hope it’s not possible; barium oxalate is a precipitate after all
Once the appropriate indicator is chosen, titration can be carried out directly. There are such methods in analytical chemistry, suitable for titrating mixtures of strong acids and weak acids.
Oxalic acid is reducible, and it can be subjected to redox titration using potassium permanganate, while sulfuric acid can be titrated by precipitation. Very detailed methods can be found in analytical chemistry books.
Barium oxalate is not a precipitate. Last edited by mymy3344 on 2007-12-20 10:58.]
It should be possible to achieve this; the key is the selection of the indicator.