How will you separate a mixture of iron filings and sulphur powder without using carbon disulphide?
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Answered by
2
Carbon disulfide works maybe because sulfur dissolves in it.
Another approach is to find a liquid in which neither is soluble but in which the sulfur floats while the iron sinks. Here I think that bromoform (CHBr3) would be a good candidate.
Yet another approach would be to take a magnet and pass it thru the mixture, in which case the iron filings should stick to ito the magnet, while the sulfur does not. Likely some of the sulfur granules will get mixed up with the iron filings and trapped with them — so that this process only makes a partial separation, giving a pile of sulfur with less iron, and a second pile of iron filings with less sulfur. Thus one would need to repeat the process on each pile, probably a few times till the separation was complete.
And another way to separate off the sulfur would be to heat it up till the sulfur melts, and decant it off, to give some of the sulfur (i.e., the decanted sulfur) completely separated off from the iron. Of course one is left with a pile of iron filings caked with sulfur, so that if one wants to also end up with separated iron filings, one could heat it more (to ~400 oC) to vaporize the sulfur away from the iron. But here one would need to be careful to avoid combustion of the sulfur in air — doing this in a vacuum system would help.
Also there is a really tedious way to make the separation. Take a miniscule tweezers and separate one from the other grain by grain under a microscope.
But there are probably several more possibilities to make the separation.
Another approach is to find a liquid in which neither is soluble but in which the sulfur floats while the iron sinks. Here I think that bromoform (CHBr3) would be a good candidate.
Yet another approach would be to take a magnet and pass it thru the mixture, in which case the iron filings should stick to ito the magnet, while the sulfur does not. Likely some of the sulfur granules will get mixed up with the iron filings and trapped with them — so that this process only makes a partial separation, giving a pile of sulfur with less iron, and a second pile of iron filings with less sulfur. Thus one would need to repeat the process on each pile, probably a few times till the separation was complete.
And another way to separate off the sulfur would be to heat it up till the sulfur melts, and decant it off, to give some of the sulfur (i.e., the decanted sulfur) completely separated off from the iron. Of course one is left with a pile of iron filings caked with sulfur, so that if one wants to also end up with separated iron filings, one could heat it more (to ~400 oC) to vaporize the sulfur away from the iron. But here one would need to be careful to avoid combustion of the sulfur in air — doing this in a vacuum system would help.
Also there is a really tedious way to make the separation. Take a miniscule tweezers and separate one from the other grain by grain under a microscope.
But there are probably several more possibilities to make the separation.
Answered by
4
Answer: By using the magnetic separation we can separate iron filings from powdered carbon.
Hope it may help you.....
Explanation:
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