Vikascoder
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preparing sodium hydroxide without electrolysis
thanks for giving your precious time to this topic . i want to make sodium hydroxide without electrolysis of sodium chloride. will you please tell me
some ways to make sodium hydroxide .
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Hexavalent
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For god's sake, read some literature before posting. Try limewater and sodium carbonate if you are desperate.
TBH, NaOH is one of the cheapest chemicals available to a home lab . . .if I were you, I'd just buy it.
"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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Adas
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Buy it, it is sold as drain cleaner.
Rest In Pieces!
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Bhaskar
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Or...
1)react sodium metal with water by adding small amounts to it.
2)some displacement reactions from readily available chemicals owe to it's synthesis.
3)if none of the above can be done, extract lithium from energizer batteries, and react it with water to obtain its hydroxide. Then displace it with
salt or sodium chloride to form sodium hydroxide and lithium chloride, then boil the mix to half concentration and cool it to percepitite lithium
chloride, leaving sodium hydroxide behind in sol. BTW, this method was just an idea and using it would be impractical.
This should be in beginnings...
Moderators, do your job. 
[Edited on 06-10-2011 by Bhaskar]
[Edited on 06-10-2011 by Bhaskar]
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Vikascoder
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I like to prepare it from lithium hydroxide. Bhaskar can you tell me some displacement reaction which leads to its synthesis except which uses sodium
carbonate.
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Bhaskar
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let's see,
AgOH + NaCl = NaOH + AgCl...but I don't see a synthesis to silver hydroxide if you don't have it.
KOH + NaCl = NaOH + KCl...which could be difficult to isolate.
You can buy it at kundli market.
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Vikascoder
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what about calcium hydroxide.
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ScienceSquirrel
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Thread Moved
13-3-2012 at 04:07 |
Bhaskar
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You can react Ca(OH)2 with more reactive metallic salts such as sodium, barium, lithium, strontium, etc.
Please note that any anion can be used, such as chloride, nitrate, hydroxide, sulfate, sulfide.
I also remember that the hydrolysis of sodium sulfide can form it's hydroxide-
Na2S + H20 = NaHS + NaOH
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Vikascoder
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ca(oh)2+NaCl=?
will it work
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ScienceSquirrel
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Sodium carbonate is readily available as washing soda, etc everywhere or can be made by heating sodium bicarbonate.
Calcium hydroxide is readily available for treating marine aquariums, for making mortar as hydrated lime for gardens, etc.
Mixing their solutions makes sodium hydroxide and calcium carbonate.
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Vikascoder
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I am not making sodium hydroxide but preparing a project on various methods to prepare it i know this process already which uses sodium carbonate and
calcium hydroxide. I am looking for more process to make it
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Hexavalent
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Vikascoder . . .why do you need all these processes?
SS - That's what I bloody suggested!
"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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ScienceSquirrel
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I know.
But it pains me watching them thrash around trying to invent ever more exotic ways to make a readily available commodity chemical.
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Vikascoder
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I know sodium hydroxide is most easily available chemical . For making soaps , for drain opening but i just want to know various ways. I hope i am not
irritating if i am then please forgive me.
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bbartlog
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No. The best (and possibly only) way to do it with Ca(OH)2, which was used commercially into the 19th century, is Ca(OH)2 (aqueous slurry) + Na2CO3
-> CaCO3 + 2NaOH. This works because CaCO3 is extremely insoluble, but has to be carried out in fairly dilute solution. Google Books or Hathitrust
has lots of old public domain works that can provide more detailed instructions.
The less you bet, the more you lose when you win.
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Bhaskar
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Quote: Originally posted by bbartlog  |
No. The best (and possibly only) way to do it with Ca(OH)2, which was used commercially into the 19th century, is Ca(OH)2 (aqueous slurry) + Na2CO3
-> CaCO3 + 2NaOH. This works because CaCO3 is extremely insoluble, but has to be carried out in fairly dilute solution. Google Books or Hathitrust
has lots of old public domain works that can provide more detailed instructions. |
Ooooooops!! 
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Vikascoder
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u have to pay for this book first and you would not like to buy books only for one small topic
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phlogiston
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But then do you count 'metathesis reactions' as one possibility, or do you need every possible variation?
Ca(OH)2 + Na2CO3 --> CaCO3 + 2NaOH
has been mentioned now, but
Ca(OH)2 + Na2SO4 --> CaSO4 + 2NaOH
will work in principle, as will
3Ca(OH)2 + 2Na3PO4 --> Ca3(PO4)2 + 6NaOH
And then every variation of the above using barium, or ... etc. etc.
See my point?
-----
"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer |
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Vikascoder
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Phlogiston thanks a lot seriously i was searching for this answer . I had forgot about sodium sulphate and calcium hydroxide this type of process i
was looking for. Thank you phlagiston .
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