13
votes
Vapor pressure of immiscible liquids
This is not just some vapor pressure. This is the equilibrium vapor pressure. Thermodynamics is all about equilibrium, you know. And equilibrium, roughly speaking, is what takes place in a closed ...
- 31.2k
10
votes
Accepted
Do we have some "rule of thumb" to estimate the miscibility of metals?
Bottom line: there are no simple rules of thumb.
To demonstrate this, I will show a round robin of phase diagrams for fcc metals ($\ce{Ag}$, $\ce{Cu}$, $\ce{Au}$, $\ce{Ni}$) with no intermetallic ...
- 8,529
8
votes
Accepted
Polarity of alcohols and their miscibility in water
If your book says exactly that, then it says nonsense. Sure enough, the addition of CH2's makes a molecule less polar. As for the solubility in water, methanol is miscible - i.e., infinitely well ...
- 31.2k
7
votes
Can gases be "immiscible"?
Yes. Not at standard conditions, but at elevated temperatures and pressures there can be gas-gas immiscibility. See Liquids and Liquid Mixtures by Rowlinson for more details. Some examples include ...
- 71
6
votes
Polarity of alcohols and their miscibility in water
My review book (Princeton review) says that ethanol has stronger
intermolecular forces than methanol because it has a large molecular
mass and is therefore more polarizable
True
Ethanol does on ...
- 413
5
votes
Can gases be "immiscible"?
The composition of a mixture of gases is due to gravity, which separates, competing with thermal motion which mixes. Gases are totally miscible but that does not mean that the concentration has to be ...
- 30.5k
4
votes
Miscibility gap of heptane-methanol mixture
Methanol is a polar solvent; heptane is very non-polar. If you start with methanol as solvent, you can dissolve a little heptane into it; if you keep adding heptane, you reach the solubility limit of ...
- 14k
4
votes
Miscibility of pairwise miscible liquids
So you want to know whether there is a ternary system with an "island of immiscibility". Well, it turns out that people have thought of this before; such systems have a name ("type 0 systems"), and ...
- 31.2k
4
votes
Miscibility of Hexane and Ethanol (Anhydrous vs 96%)
Theory and Application of solubility Parameters are beyond our scope. However, an interesting viewer should have at least read through collection of research by Charles M. Hansen, published during 60s ...
3
votes
I need help finding several immiscible liquids
Glycerol has a density $1.263$ g/mL. It is miscible with water in all proportions. So by changing the ratio glycerol:water, you can make a large number of mixtures having all possible densities ...
- 28.3k
3
votes
Does acetophenone show haloform reaction?
Fuson and Bull [Chem. Rev., 15, 275 (1934)] found acetophenone to give a positive iodoform test. They modified the usual procedure, adding dioxane as a cosolvent to better dissolve water-insoluble ...
- 785
3
votes
Composites of Immiscible Solids - Aluminum and Lead Example
You are correct that solid Al (fcc) and Pb (fcc) are (surprisingly for both being fcc) not miscible in each other (well, there is always some miscibility as driven by entropy). Heck, there is even an ...
- 8,529
3
votes
Accepted
Does hydrogen bonding contribute in solubility of a substance
Ethoxyethane, better known as "diethyl ether" or even just "ether", can form hydrogen bonds with water. But fitting the ether molecules into the water solvent means you have to break up some water-...
- 57.1k
2
votes
Accepted
Multiphasic liquid "flotation" experiment
https://www.youtube.com/watch?v=GRPufqPgTeI
I played around a bit with this in the lab and this is what I came up with.
Basically, I made a three phase system with hexanes on top, water with ...
2
votes
Mutually immiscible liquids
If one allows miscible liquids, there could be layers with just two solvents, with differing amounts of solutes added to make one layer denser than another. The layers might stay separated for months ...
- 32.5k
2
votes
Does Raoult's law hold for immiscible liquids?
I believe this excerpt from sciencedirect may answer your question:
"Vapor Pressures and Boiling Points in a Mixture of Immiscible Liquids
When two immiscible liquids are present in a mixture, ...
2
votes
Does emulsify mean to combine or break down?
It seems you have confused the related word forms.
Emulsification is a process of forming an emulsion.
An emulsifier is a substance that helps to form and stabilize an emulsion.
Emulsion is a ...
- 41.5k
1
vote
Does emulsify mean to combine or break down?
An emulsion is just a colloidal system of liquid dispersed in a liquid phase just like smoke is a colloidal system of solids dispersed in air. In emulsions, one of the liquid phase is of typical ...
- 40.2k
1
vote
Accepted
Direction of mass transfer in two film theory
Just keep in mind: the driving force of mass transfer is a concentration gradient. Nature tries to 'equilibriate' a difference in concentration between two phases.
As such, the mass transfer in that ...
1
vote
Is isobutanol miscible with ethanol?
According to the Merck Index${^{[1]}}$
isobutanol is miscible with ethanol
1) O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal ...
- 17.5k
1
vote
Can gases be "immiscible"?
This answer is not completely my own and uses some ideas from Mcruggs' answer. I think that at 21°C and 1 atmosphere, the answer is no but it might be possible when either the pressure is 800 ...
- 478
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