eanardi
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Separing C from CaC2 reaction with water
Hello everyone,
I have recently reacted a chunk of calcium carbide with water to use the acetilene produced by it. As one of the reaction's products is calcium
hydroxide I decided to keep it and dry it off and all, but there still are some traces of carbon on the final powder, what should I do?
Thanks
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annaandherdad
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You could burn off the carbon in an open crucible. The calcium hydroxide might dehydrate to calcium oxide, but you could always add water to get
calcium hydroxide back again.
But calcium hydroxide is cheap and getting it from the residue of CaC2 reactions is a lot of trouble. Besides commercial CaC2 likely has other
contaminants in it besides carbon.
Any other SF Bay chemists?
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Amos
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You could just keep adding ice cold water until all of the calcium hydroxide dissolves, and quickly filter off the carbon.
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UC235
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I doubt that calcium hydroxide as a byproduct is going to be very pure. AFAIK, the feedstock is just limestone and coke (from coal).
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