Asked by David
Explain whether or not each of the following pairs of solvents might be useful as a solvent pair for recrystallization.
(a) ethanol-methanol (b) hexane-cyclohexane (c) acetone-ethanol
(d) water-ethanol (e) water-cyclohexane
(a) ethanol-methanol (b) hexane-cyclohexane (c) acetone-ethanol
(d) water-ethanol (e) water-cyclohexane
Answers
Answered by
bobpursley
You need to solvents one of which is excellent, the other poorer. So it depends on the solute, but I doubt e solvents both dissolve the same solute. The others will depend on the solute.
Answered by
bobpursley
and, of course, as DrBob just pointed out to me, e solvents are NOT miscible, which they must be.
Answered by
David
thanks. i understand why e won't work, but im a little confused on choice a. they both dissolve a wide range of solutes so would it be a great solvent?
Answered by
David
well im confused because you said one needs to be great and the other has to be poor. so if you combine both do you get a great solvent or a horrible one?
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