Questions tagged [immiscibility]

This tag should be used when asking questions about two or more liquids that cannot mix, for example, water and oil. This tag should not be used for cases where two liquids can be homogenized by mixing, for example, cold and hot water, or water with two different dissolved salts and densities.

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Mutually immiscible liquids

How many mutually immiscible liquids can be stored in a glass bottle at S.T.P.? According to PATTLE, R. E. (1950). Systems of Mutually Immiscible Liquid Layers. Nature, 165(4188), 203–204. a ...
4 votes
2 answers

Does Raoult's law hold for immiscible liquids?

I know that Raoult's law holds true only for a non volatile solute in a volatile solvent mixture wherein the vapour pressure of the solution gets lowered due to the addition of solute. Now, first of ...
2 votes
2 answers

Miscibility gap of heptane-methanol mixture

To explain my question a bit better: I added heptane and methanol together in equal ratios (1:1) and observed a separation in phase where there appeared to be an oily layer sitting on top of the other ...
4 votes
2 answers

Miscibility of Hexane and Ethanol (Anhydrous vs 96%)

In my lab, I mixed 8:2 (mass:mass) of Hexane:Ethanol (Hexane: 0 ppm of water content, ...
1 vote
0 answers

What determines solubility (or miscibility) in organic solvents?

I'm actually quite surprised that this isn't really mentioned anywhere on the internet (or I'm just bad at searching)! Solubility in water is known to be directly related by multiple factors, and for ...
-1 votes
1 answer

I need help finding several immiscible liquids [closed]

I am trying to fill a vial with as many immiscible liquids as possible so that they form many separate layers. I want to do this as a way to visualise how liquids with different refractive indexes ...
7 votes
1 answer

Do we have some "rule of thumb" to estimate the miscibility of metals?

For example, for ordinary fluids, we have polar and apolar ones. The "rule of thumb" is that polar fluids mix with each other, and also apolar fluids mix with each other, but polar fluids ...
0 votes
0 answers

pH responsive polymer which is immiscible in water?

Can anyone suggest a pH-responsive polymer, which is immiscible in water (polar solvent) but miscible in oil (e.g vegetable oil)? I want to study the change in the density of such polymers when they ...
9 votes
1 answer

Vapor pressure of immiscible liquids

I have read that vapour pressure of a mixture of two immiscible liquids is $$P=P^0_A + P^0_B$$ where A and B are immiscible liquids. If they are immiscible, they would form separate layers. Thus ...
1 vote
0 answers

Does acetophenone show haloform reaction?

Although acetophenone is a methyl ketone, as it is aromatic, it is immiscible in H2O so the last step in the haloform reaction should not occur? I couldn't find any source regarding the haloform ...
1 vote
1 answer

Direction of mass transfer in two film theory

In an extraction process compound A is transferred from one solvent to another solvent. The two solvent may be, for example, water and dichloromethane. These two solvents are immiscible and when ...
21 votes
5 answers

Can gases be "immiscible"?

Anyone know of any examples of gas mixtures that phase separate, analogously to the way immiscible liquids do? They would have to be extremely non-ideal. I might guess one might have to be much ...
1 vote
0 answers

Keep two Mica Powders separate in oil and water mixture [closed]

First off, apologies if this isn't the appropriate place to ask this, let me know and I'll remove immediately. I recently acquired some Mica Powder Pigments, and they are fun the play with. I mixed ...
6 votes
1 answer

Is isobutanol miscible with ethanol?

I can only find info on sec-butanol (aka butan-2-ol) and ethanol. I need to know whether isobutanol forms an azeotrope with ethanol. Can you direct me to a legitimate info source too, please?
8 votes
2 answers

Polarity of alcohols and their miscibility in water

I am an AP Chemistry student and there is a small detail concerning polarity of molecules that I am confused about. My review book (Princeton review) says that ethanol has stronger intermolecular ...
1 vote
1 answer

Composites of Immiscible Solids - Aluminum and Lead Example

The $\ce{Al}$-$\ce{Pb}$ (aluminium-lead) phase diagram clearly depicts that when cooled from the liquid state, aluminium and lead are not miscible in the solid state, i.e. the crystal structure of ...
0 votes
1 answer

Does hydrogen bonding contribute in solubility of a substance

If a compound can't hydrogen bond with itself but can hydrogen bond with the water, why does it still remain immiscible? Take for example ethoxyethane. It can't hydrogen bond with itself but its ...
4 votes
1 answer

Miscibility of pairwise miscible liquids

If you have a mixture of 3 (or more) liquids which are "pairwise miscible", but which don't react with each other, does that guarantee that the mixture will only have one layer? By "pairwise miscible"...
3 votes
1 answer

Multiphasic liquid "flotation" experiment

I'm trying to create an experiment where two immiscible liquids are mixed and are then separated by density. Most of the container is occupied by the lighter liquid, and the small amount of heavier ...