Hexane (C6H14) and water (H2O) form two separate layers when mixed
CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding
Problem
Hexane (C6H14) and water (H2O) form two separate layers when mixed. Which statement best explains this observation?
(a) Hexane molecules are too large to fit between water molecules, so the two liquids remain separate.
(b) The polarity difference creates a repulsive force between water and hexane, preventing mixing.
(c) Mixing hexane with water disrupts water’s hydrogen-bond network without providing comparable intermolecular attractions, making the process energetically unfavorable.
(d) Hexane molecules experience stronger London dispersion forces with each other than hydrogen bonds between water molecules, so they do not mix.