separation of propiophenone from phenylacetone
the mixture is about 80% propiophenone and 30% phenylacetone.
the idea is separating both chemical wihout destroying one of them.
since both are useful.
the boiling point are very close so distillation look like a no go.
What is the driving force behind separation of mixtures (not talking about gravity causing slurries to separate)?
I know powders composed of different compounds will separate over time. This leads to higher local concentrations of the respective substance(s).
I have heard people say this happens with alcoholic beverages over time (which I do not believe the difference in concentration of a homogenous solution would be noticeably different over the course of t it takes to drink). I could understand if this phenomena does occur for two reasons: 1.) The difference in density of the two liquids (although i have yet to see evidence of this in homogenous mixtures) 2.) The difference in free energy due to intermolecular interaction (im assuming it would still come down to an enthalpy argument) of solvated molecules vs molecules surrounded by like molecules were greater than the difference of the entropy contribution to free energy. (1.) Would obviously still technically fall under this category but instead of the only the intermolecular interactions contributing to free energy I am wondering if the difference in the force from gravity on the two types of molecules is the driving force.
If anyone could confirm or deny the existence of this phenomena that would be great. If it does exist, it would be good to know if my logic is correct. I assume an alcoholic beverage generally maintains fairly evenly distribution unless you have an enormous volume of liquid or there is an outside force driving separation. I would think the majority of the people that notice a difference in the concentration of their drink at different heights would be due to ice melting.
Anyway, back to solid mixtures of powders.... What is the reason these seperate to give higher local concentrations of the various components? I would think that both 1.) And 2.) Could play a part here, but I would assume with solids the 2.) Is the primary factor, which is why there is local increases in concentration throughout, whereas 1.) Would be the primary factor with homogenous solutions, resulting in the composition in composition being height dependent.
For any of these situations to occur, there must be a significant change in free energy for the particles to move without outside influence. Additionally it must be a large increase in enthalpy to overcome the reduction in entropy. Also, if this was the case, one would expect the rate at which seperation occurs/[increases] to be temperature dependent.
... keep reading on reddit ➡A mixture of CW and HW can be separated by applying DQ in fractional distillation.
DQ(g) / CW
DQ(l) / HW
CW ends up above DQ(g) as it turns it to DQ(l).
Density interactions allow you to 'distill' out CW, leaving behind pure HW with an atmosphere of DQ(g).
The collection flask contains a mixture of CW and DQ, which you can decant to obtain pure CW.
Alternatively add DQ to HW/CW in open air until all the CW/DQ is lost to the drain.
To further accentuate the existence of half-step density differences, I used Q instead of DQ.
Despite the reaction kinetics being infavorable, the gravity-less nature of evaporated compounds allows the throwup of vapor*, which allows for what is actually defined as fractional distillation.
Note I am using the real definition of vapor here, not the OECake definition of vapor - vapor, as in, droplets of liquid suspended in a gas. Vapor here referring to the bulk form of substance, and gas referring to a compound in a gaseous state, for example, droplets of Q(l) suspended in Q(g), or more contextually, CW in DQ(g).
Another round of emphasis on how unfavorable it is to actually use this procedure to get CW out - I did it to prove the proposed theory.
Quasi-irrelevant sidenote on my biased choice of chemical formula:
Though DQ is the same as QD, I use DQ because:
- This allows for a large variety of color differences to indicate density, separate compound and C/H effects.
- QL would require me to click on Q and move my left hand over to L.
Thus also the reason why I use HWQ rather than QH, despite QH having its own strawberry tinge.
That was it!
My next thread will be on a similar topic.
1.How to separate mixture of two or more multivariate distributions.
2.In a multivariate sample data, which is mixture of many distributions, has some categorical columns as well, in that case how to separate them.
i.e. Separates into CO2, O2, N2, etc.
As far as I understand, the air we breathe is a mixture of hundreds / thousands of different gases. If you isolate some of these gases, they'll either rise or sink due to the differences in density compared to air as a whole. My question is, why don't the oxygen, nitrogen, CO2, and other gases slowly just settle out into different layers based on their densities? Why does air stay "mixed"?
Happened to me recently and it wasn’t great.
...but my wife refuses to sleep on the couch.
My husband decided he can't stay in our house at this phase because it's too painful being around me and it is making him resent me. He said he doesn't want that, and that we need to focus on ourselves right now and him moving out is the only option right now. I agreed and pushed for an initial timeline with and end and threw out three months, six months, nine months. . . and he said "at least three months."
I know he's actively looking for apartments so he wants to gtfo as soon as possible. I'm better at internet research so I did some research for him and found a bunch of short term furnished apartments where he said he wanted to live that also allow pets so we can split "custody." He told me he appreciated it but to focus on myself, he'll be fine. I let him know I am putting the same energy into myself as I am our marriage and i like caring about him.
Anyway
I don't know how long it takes to mobilize the administrative timelines to move into a furnished apartment, but the point is our remaining nights together are quickly coming to an end. We haven't been together casually, romantically, or sexually in about two weeks.
Is it appropriate or fucked up or something else (what?) if I ask about being together the night before he leaves in some capacity or does that put unfair pressure on him? I don't believe this is something he would bring up on his own since we're both struggling so hard to communicate right now.
I appreciate any advice, stories, warnings, etc.
