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July 7 2011 5 07 /07 /July /2011 15:00

Warning: Copper and zinc salts are slightly to moderately toxic. Do not ingest them. Hydrochloric acid is corrosive.

 

You will need:

Brass

Ascorbic acid or sodium metabisulfite

Sodium bicarbonate

Carbon rod

 

Electrolytically oxidize the brass in sodium bicarbonate solution with a carbon cathode. Green copper carbonate and white zinc carbonate are formed. Filter and dissolve the precipitate in HCl. A dark green solution is formed. Add sodium bicarbonate until the pH of the solution is around 2 or 3. Then add ascorbic acid or sodium metabisulfite. White copper(I) chloride will precipitate. Filter. Now you have a copper(I) chloride precipitate and a zinc chloride solution. You have separated brass.

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Published by LanthanumK - in Experiments
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Jonathan 08/08/2017 15:56

Do you have any advice of how to measure the mass of Zinc chloride in solution? Since there are other impurities in the solution.

shahzad 03/06/2016 10:16

Your post "how saperate brass" is not enough to practice please write in detail

shahzad 03/06/2016 10:08

Your post "how saperate brass" is not enough to practice please write in detail

cnhgtf 01/05/2012 11:50


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LanthanumK 01/12/2012 19:49



OK, good idea