Q&A: How to “reflux” without a distillation lab?!?
Question Vladimir D : How to “reflux” without a laboratory distillation ! I am trying to dissolve something in 25 ml of d cuddly and j I need to reflux for 2.5 heures.Je wonder if I can do without a laboratory distillation fractions e and m me if “it reflux for 2.5 hours” means for heating the solution for 2.5h do not know if that’s what it means vraiment.La next tape after s I will have to extract the r residues of diluted hydrochloric acid if it helps r lay my question:) Thanks in advance! catlover wow you are thunderous .. wish I could ask you more things now: D and I would like to put all of them in details. you would have had me greatly aid more .. any fa is the r response has t incredible and that’s what I really needed .. I think I’ll heat the d Cuddly 180 CMerci !!!!!!!!!!!!!!! Best r Answer:
reflux you heat the solvent his point boiling, g n generally using a condenser air or water solvent vapors condense down into the solution. A capacitor is a cylindrical glass tube s’ins Re at the top of your r Container r Action (usually a ball). It is jacket (tube the int laughing another tube) so that water or air does not come into contact with solvent vapors, it cools all glass that the vapors come in contact with. If you do not have a capacitor, you can ins Rer a centrifuge tube filled with ice (one tube Can test Also Be used, Although the sharp tip of the centrifuge tube to direct the flow of condensate ) in the r container. Make sure you have not joined the vessel while heating, as the buildup of pressure can be brought dangerous. In addition, with this last Re m Method, you Your likely to lose some of your solvent, so be pr t for v Rifi r Action every 15-30 minutes and add solvent stupid accordingly. Remember to change when the ice melts too.
What do you think R Answer below!
Tags: distillation, Reflux, without
September 23rd, 2010 at 9:39 pm
Reflux means you are not distilling it. You are boiling the solution, and condensing the vapors and returning them to the pot. So all you need is a flask and a condenser. Since decalin has a very high boiling point, you do not put water through the condenser. An air condensor is simply a straight glass tube. The cooler air temperature surrounding the condenser is sufficient to condense the hot decalin.
Decalin is not soluble in water, so once the solution cools, you essentially wash it with dilute HCl, and the product you want will likely be extracted into the acid layer.
Without knowing what the purpose is, my suspicion is that you are thermally breaking up the original compound into a basic component, that will be extracted into the dilute acid solution.