Questios about fractional distillation ?
961772
1. I'll leave it to you...\n2. Hmm.. Add some marmer rocks to make the heat spread equally in the solution.. \n\npeace\nvixklen
49605
Distillation involves boiling water and then collecting only the vapor that condenses. The condensed vapor will not include salt or most other impurities. To distill, fill a pot halfway with water. Tie a cup to the handle on the pot's lid so that the cup will hang right-side-up when the lid is upside-down (make sure the cup is not dangling into the water) and boil the water for 20 minutes. The water that drips from the lid into the cup is distilled.
478185
Fractional Evaporation is done in a long tube the item to be evaporated is heated in the bottom and then the vapors are allowed to rise as the item (suppose crude oil) is made up of diffrent liquid all the liquid will have diffrent condensation point also so will condense at different height and the tray put at these heights will collect the different items at different altitude.
696442
It would depend on what the nature is of the unwanted impurities. One could use chemical separation or distillation.  Distillation would be the easiest.
458035
my jigsaw has a framulator. Do your own homework.\nMIKE
363694
I would imagine that they would distill it.  Acetic acid boiles somewhere just above water if I remember correctly.  That's what I would try.  Actually I'd probably just buy some more.
117711
>>>1. Plant medicine\n>>>2. Dry completely\n>>>3. Grinding\n>>>4. Methanol extraction\n>>>5. Filtration using Watmann No. 5 filter paper\n>>>5. Concentration with rotary evaporator\n>>>6. Suspend in distilled water\n>>>7. Partitioning\n>>> 1) partition with hexane\n>>> 2) partition with n-butanol
884312
Distillation Fatty acids and fatty alchols for the Cosmetic industry
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Let w be the fraction of licquid in the wine glass consisting of water; initially w=0. The fraction of water in the water glass is 1-w (because the total amount of water in both glasses never changes from 100). \n\nLet s be the volume of a spoonful. As the result of a transfer from the water glass to the wine glass:\n\nw --> w' = (100w + s(1-w))/(100+s)\n\nDefining x = w - 1/2, this equation becomes:\n\nw' = x'+1/2 = (100(x+1/2) + s(1/2-x))/(100+s)\n==>\nx' = [(100-s)/(100+s)]x = ax\n==>\nx' = ax where a = (100-s)/(100+s)\n\nThe initial value of x (i.e. w-1/2) is -1/2, so after r operations x = -(1/2)a^r and so:\n\nw = 1/2(1-a^r)\n\n********\n\nFor example if s = 8cc (about 1 tablespoon), a = .85 and after three operations:\n\nw = (1/2)(1-(.85)^3) = .19  (19% or 19 cc water)\n\n********\n\nThe answer is not exactly proportional to the size of a spoonful, but the rationale for the previous answers is probably that if s << 100, then a ~ (1 - 2s/100)\n==>\na^3 ~ (1-s/50)^3 ~ 1-3s/50\n==>\nw ~ 3s/100 (about three spoonfuls).
44413
Thermal energy is added to provide the heat of vaporization for the material you want to distill. Once it is vaporized and conveyed to a place that is away from the original material, you have to condense the vapor to recover what you want in liquid form. This requires removing the heat of vaporization. So distillation requires a heat source and a source of heat removal, or cooling.
601468
The answer is (d) if this is the question:\n\nInitially the tank is full.  The outlet pipe is opened.  When the water in the tank is 3/4th full, both inlet pipes are opened.  Calculate the fractional level of the water in the tank after 2:05 hr.\n\nSince inlet A and outlet C cancel each other out at 50L/hr, only need to consider inlet B at 25L/hr.  Since 2:05 hr is the same as 2.083 hr (5 min = 0.083 hr), the amount of water added by inlet B is 25L/hr * 2.083 hr = 52.08 L.  Will use 52 L in the calculation.\nThe total amount of water in the tank after 2:05 hr is the initial 750 L + 52 L = 802 L.\nThe fraction level of the water is 802 L / 1000 L = 0.802\nSince 4/5 = 0.8 the answer is (d).
510304
You need to be talking with a chemical engineer who is knowledgable in distillation. As far as I know there is no such thing as a "distillers group" but there are many chemical engineers who are experienced in distillation.\n\nMost major contractors have such engineers. This is specially true in cities like Houston, Texas
778647
By fractional distillation.\nDEG distills at 93 'C, you can collect first and then collect water at 100 'C.
1039581
Which method of deaeration are you using?  It makes a big difference.  Definitely less than 0.1 mg/L.
104161
You could rig a "Dean-Stark Trap" on the side of your condensor. That will eliminate water from your esterification (assuming its similar to the Fisher esterification) and force the production of more water and product, until one of the reagents is used up or an equilibrium is achieved.\n\nAnother method would be TLC, comparing the starting reaction mixture to the final product.\n\nSpectroscopy (NMR, IR) could be used.\n\nFinally, you could just put some of your sample into a GC-MS.
313620
M(conc.base) x vol.(conc.base) = M(dil. base) x vol.(dil. base)\n12 x vol. = 2.5 x 350\n vol = 72.9 ml \n\nIn a graduated cylinder, take 72.9 ml of concentrated NaOH. And in a standard flask, take 350 - 72.9 = 277.1 ml of water. To this flask, add the concentrated NaOH (72.9ml) from the graduated cylinder and shake the flask for uniform concentration. Now you've prepared 350 ml of diluted NaOH solution.
757850
use multiple effect evaporator.\nhttp://www.answers.com/topic/sugar