Consider the following solvent pairs. If mixed together, which pairs would form two layers? If they form two layers, which solvent would be on top?
(a) hexanes and water
(b) water and methylene chloride
(c) hexanes and methylene chloride
(d) methanol and hexanes
(e) ethanol and water
(f) acetone and toluene

Question

Quizplus · Accepted Answer

The Answer is (a) Would form two layers; the hexanes (d=0.7) would be on top (water, d=1.0).
(b) Would form two layers; the water (d=1.0) would be on top (methylene chloride; d=1.3)
(c) Would not form two layers (miscible).
(d) Would form two layers; the hexanes (d=0.7) would be on top (methanol, d=0.79)
(e) Would not form two layers (miscible).
(f) Would not form two layers (miscible).

Consider the Following Solvent Pairs