Can we make potassium chloride from sodium chloride?
Wednesday, July 28th, 2010 at
7:55 PM
(sorry for my bad english)
how about getting potassium from banana??
one question again, can potassium chloride be subtituted by sodium chloride for general purpose (i want to get chlorate from potassium chloride. and i want to substitute potassium chloride with sodium chloride)???
Filed under: Potassium In Food
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Can we make KCl from NaCl? The answer: not easily. And not purely. Na and K have very similar chemistry and it would be very unusual to be able to separate Na+ from K+. The solubilities of KCl and NaCl are different enough that it might be possible to separate them by successive crystallization. But it be hardly worth the effort. For lots of reactions, they are interchangeable and only provide a source of chloride ion.
Then you’ll get sodium chlorate instead of potassium chlorate.
This is interesting: "… potassium chlorate is produced by the electrolysis of a sodium chloride solution to form sodium chlorate, which is reacted with potassium chloride to precipitate potassium chlorate. The resultant sodium chloride is returned…" http://en.wikipedia.org/wiki/Potassium_chlorate
The solubility of KClO3 is 7.19 g/100 ml (20C), while the solubility of NaClO3 is 101.0 g/100 ml (20C). Therefore, the KClO3 can be selectively crystallized and recovered.
Potassium from bananas is in trace amounts, it wouldn’t be worth extracting it for the price of the banana. Also i don’t think it would be possible to substitute the sodium for the potassium because sodium is higher in the reactivity series than potassium, unless you had very refined conditions and a specific catalyst