Question

If we take two immiscible liquids of the same density and if we mix them together, what will happen which liquid will settle down or float on the other, or it does not do any of these. If it does not do any of these, then what does it do?

Answer 1

1) If an immiscible liquid of higher density is dropped into a liquid of lower density then that liquid will bead up to minimize the surface tension and will move to the bottom of the vessel.

2) Similarly if an immiscible liquid of lower density is dropped into a liquid of higher density then that liquid will float on top of the liquid forming spherical globules.

our point is

3) If an immiscible liquid of the same density is dropped into another liquid of same density and shaken then the resultant liquid will contain globules of both liquids distributed randomly forming an emulsion. It is like a box containing balls of two different colors distributed randomly. This is true for liquids of equal volume but if the volumes are not equal then the resultant liquid will be predominantly containing the first liquid with lesser number of globules of the second liquid distributed randomly for the case volume(1) > volume(2). For the case of volume(1) < volume (2), the resultant liquid will be predominantly of second liquid containing lesser number of globules of first liquid distributed randomly.

In all the cases, all small droplets of one type of liquid will coalesce to form a bigger drop with time, to minimize the surface tension and eventually both the liquids will separate out.

4) If the vessel is not shaken then the second liquid would just bead up on top of the first liquid.