is it possible to prepare equilibrium mixture staring from both direction?
607425
Yes, provided the conditions are right. For example if the reaction\n\nA + B -> c + d\n\nis exothermic, the reaction in reverse will be endothermic, i.e. you will have to supply the heat.
196696
One possibility is fractional distillation.  This procedure takes the boiling points of each component of a mixture into account.  The mixture is connected to the proper apparatus and placed over heat.  That component with the lower boiling point will evaporate off first and can be collected in a recovery flask.  That material with a higher boiling point will evaporate latest.
116691
Chromatographyis a way to seperate out different parts of a mixture.  The idea is that you pass a fluid (either a gas or a liquid) down a long path, and the different molecules will move at different rates.  THat's the long and short of it.  So the molecules that move fastest get to the end first, and the slowest come out last.  You seperate things by making them race, and similar chemicals will take a similar amount of time to finish the race.\n\nI'm assuming that you're getting confused by things like "solid phase" and "mobile phase" and "bind affinity" and such.  The idea though is that you set up different types of obstacles depending on which things you want to win the race.  Sometimes this is dine by using something with a lot of positive charges, so that things with negative charges will get stuck and the things that are neutral or positively charged will win the race. Sometimes you sort things by size, by using a gel as an obstable with a bunch of little pores in it: little guys get lost inside and the fat guy wins the race.  With gases, you can just make the race really, really, really long, and the lightest parts will move the quickest while the hevy boys lag behind (this is a way that uranium is enriched for nuclear reactors and bombs).
1175612
you can use this formula m1/v1 = m2v2 whereas\nm1v1 is the old conc. volume and m2v2 is the new concentration an volume
659732
Since they are the same size and charge a normal gel would not work, and I'm not sure that a 2D gel would work either. I think isoelectric focusing is supposed to be a very sensitive method for separating similar proteins, so you might look into that.
4678
to find this answer....assuming ideal mixtures and complete disassociation.  \n\nM1V1=M2V2\n\nso take .450*300/4 = 33.75
140226
ethanol and oil\nwater and chloroform
725280
http://www.mixturesweb.com
887814
What type of flow charts are you referring to?  They d not react with each other. They do not dissole in each other.  With some flour and perhaps some baking soda you could make a cake.
977052
You need a variable in any experiment to compare results. Perhaps you could use cold (ice) water in one container, warm in another and hot or boiling in another. You can then make your prediction on which will dissolve first and have an experiment that will verify whether you have made an accurate prediction.
550924
I believe that at equilbrium, you would have a gradient of concentration throughout the liquid from top to bottom.  At the top, you would have primarily A and B reacting.  At the bottom, you would have primariliy AB dissassociating.  In between, you would have various degrees of A, B and AB as A and B rise up from below and AB falls from above.  The magnitude of the gradient would depend on the reaction rate.
899180
In the direction of the velocity vector. That's the best that can be done, given the limited information you have provided.
93142
Why not try it?\nYou will have to come up with a way of using small amounts of each to keep it fair; perhaps a toy spoon from a doll's set.\nYou'll need to use the same amount of water for each test.\nAfter each addition, the solutions should be stirred by the same amount.
664458
Try Lancaster Synthesis.
877878
yes. This causes an imbalance in the equilibrium, so the equilibrium will shift to the right to compensate for this. The reactants would try to make more products to compensate for the product being taken away, so this would be an example of the equilibrium shifting, which is le chatlier's principle =)
1040933
I think this will be a try it and see answer.  Much of it will depend on your technique.  I have never not seen at least minimal mixing in a mixed bed column that did not have a physical separation.
169099
If your refering to chiral compounds like in organic chemistry.  I don't believe the sign of optical rotation is affected by the concentration of a pure solution.  however, if you have a racemic mixture of two isomers but with different chiral orientations then you will find the optical rotation to be "cancelled out", perse.  Meaning one compound is rotated "theta" and the other compound is rotated -"theta".  Hope this helps