why do you seldom see high-boiling solvents used as recrystallization solvents?
2006-09-16 18:31:48 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
In order to get pure crystals, you need to remove the solvent.
If a low boiling solvent is used, the crystals can be allowed to dry by evaporation or place in a partial vacuum to remove the extra solvent. This is very hard to do if the solvent has a high boiling point.
2006-09-16 18:51:51 · answer #1 · answered by Richard 7 · 68⤊ 0⤋
High Boiling Point Solvents
2016-10-17 03:53:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋
how can you use that solvent? with such characteristics it may never dissolve the solute thus you cannot recrystallize or maybe because you cannot dry easily the solute after it has been recrystallized since the solvent has high boiling point... it will take time to evaporate that, right?
it's up to you to choose...
best answer?
2006-09-16 18:53:02 · answer #3 · answered by teroy 4 · 0⤊ 0⤋
Two reasons.
It is easier to use a low boiling point solvent for recrystalization, because of temperature requirements. And second, it miminizes the possibility of thermal degregation of the solute that you wish to crystalize.
2006-09-16 18:58:06 · answer #4 · answered by richard Alvarado 4 · 0⤊ 0⤋
doggy dj didn't answer anything. The question still stand, whats the solubility of compound x at 20oC? and how can we use the given numbers of 86oc and -74oc. He/she just mentioned the basic fact about solubility. Somebody please give him thumbs down since I can't because I'm not level 2 user. Sombody pelase answer the question. We are only given compound x BP and MP nothing else. No mass or anything, How can we use them to get the answer?
2016-03-17 02:28:49 · answer #5 · answered by Anonymous · 0⤊ 0⤋