Questions tagged [extraction]
For questions regarding the separation process consisting in the separation of a substance from a matrix. This tag can be used for generic extraction of elements from ore or more specific types of extraction such as: liquid-liquid extraction, and solid phase extraction.
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How can I measure the amount of quinine in a home-made tonic water?
I'm into mixology, and lately I've been looking into experimenting with home-made tonic water, by extracting quinine (quinine salts) from cinchona barks in an acidic aqueous solution. I've read a bit ...
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How do I extract cyanide from apple seeds?
I'm working on a crime story about cyanide poisoning from apple seeds. I just would like to have an idea of what processes and extraction techniques might be involved in getting cyanide from the seeds....
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How can an inexperienced chemist determine the chemical structure of a molecule?
I'm a fairly inexperienced, but nonetheless interested chemist, currently planning a small project for the coming summer: I want to isolate an unknown chemical from a plant and determine it's chemical ...
user16651
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Why should one perform an extraction with multiple small portions of solvent as opposed to one large portion?
I'm performing a liquid-liquid extraction on a 1 l water sample for GC analysis. The procedure calls for three extractions with 50 ml of dichloromethane. Would one extraction with 150 ml produce a ...
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When is Serpeck's process preferred over Bayer's process?
Both these processes are used in concentration of bauxite.
They use different reagents.
Which is more commonly used (wikipedia says Bayer's) and why?
When is one preferred over the other?
Which is ...
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Looking for caffeine partition coefficients
As part of a project, I'm looking to carry out a liquid-liquid extraction of caffeine from an aqueous phase to an organic phase, using dichloromethane or ethyl acetate.
So I'm looking for the ...
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Increasing partition coefficient in an extraction
My friend had this homework question about supposing you had a slightly polar organic compound in an ether/water extraction with a partition coefficient in favor of ether. The question was:
What ...
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Froth floatation process - why CuSO4 is activating floating character of ZnS?
I read the following :
"In a mixture of $\ce{PbS}$, $\ce{ZnS}$ and $\ce{FeS2}$, each component is separated from each other in froth floatation process by using the reagents potassium ethyl ...
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Is it possible to extract magnesium from epsom salt?
Is it possible (at home) to extract magnesium from $\ce{MgSO4·7H2O}$, also known as Epsom salt (or, alternatively, from $\ce{MgSO4}$)?
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Sublimation of Iodine from Iodine Povidone
Iodine povidone is a complex of iodine and the polymer povidone. I am wondering if one were to heat it enough, the iodine would sublimate and could be collected. Normally iodine boils at 184.3 °C, ...
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Separating boric acid from sodium chloride
I want to create some boric acid with borax in the following reaction:
$$\ce{Na2B4O7·10H2O + 2 HCl → 4 BH3O3 + 2 NaCl + 5 H2O}$$
However as you can see, the leftover solution will contain a mixture ...
user36217
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How to perform solvent extraction of a solid
Suppose I have a solid compound from which I want to extract a target chemical I know is soluble in acetone. So I crush and mix the compound in acetone, dissolving the target and suspending the ...
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Make Acetic Acid from wood
I would like to know if it would be possible to make Acetic Acid from Wood. I know that you can charcoal wood to get the gases, cool it, and get the liquid. This would yield a bunch of chemicals in a ...
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Can caffeine be separated from coffee?
Is there a way to extract caffeine from coffee completely?
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Extraction of calcium carbonate from liquid
I'm using calcium carbonate ($\ce{CaCO3}$) in apple juice to reduce the acidity of the juice. Once the $\ce{CaCO3}$ reacts with the apple juice and raises the pH, the juice is left cloudy in color ...
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