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Topic: Can you get NaOH by this  (Read 5691 times)

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Offline acid_man

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Can you get NaOH by this
« on: December 27, 2009, 09:48:32 AM »
CaO + H2O = Ca(OH)2
Ca(OH)2 + Na2CO3 = NaOH + CaCO3
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Offline AWK

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Re: Can you get NaOH by this
« Reply #1 on: December 28, 2009, 02:01:09 AM »
THis is a method uses in Solvay plants
see: http://fr.wikipedia.org/wiki/Hydroxyde_de_sodium
under: À partir de carbonate de sodium
Unfortunately the english Wikipedia omitted this process
« Last Edit: December 30, 2009, 01:37:54 AM by AWK »
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Offline Fleaker

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Re: Can you get NaOH by this
« Reply #2 on: December 29, 2009, 03:38:26 PM »
Yes, that is a well-known process.

I think it's second most used after chlor-alkali.
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Offline aieeee

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Re: Can you get NaOH by this
« Reply #3 on: January 13, 2010, 01:36:45 AM »
won't there be a problem separating the products as Na2CO3 is also soluble in aqueous medium ?
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Offline AWK

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Re: Can you get NaOH by this
« Reply #4 on: January 13, 2010, 03:51:30 AM »
Quote from: aieeee on January 13, 2010, 01:36:45 AM
won't there be a problem separating the products as Na2CO3 is also soluble in aqueous medium ?
You should add just a stoichiometric amount of sodium carbonate and you question is irrelevant.
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