What if two immiscible liquids of the same density are mixed in a separating funnel, how will the layers form? [Pg. No. 83]

If two immiscible liquids have the same density, they will still not dissolve in each other, but they will not form a clear upper and lower layer based on density. Since neither liquid is heavier or lighter than the other, one liquid will not settle below the other in a definite way. Instead, the mixture may appear cloudy
or dispersed due to formation of overlapping droplets or an emulsion. Thus, for a separating funnel to work properly, the liquids should be immiscible and should have different densities.