Distinguishing among enantiomers requires a technique that has a chiral attribute.

(a) Boiling point does not distinguish among two enantiomers.

(b) Optical rotation does have a chiral aspect, and thus can distinguish between two enantiomers.

 (c) Because hexane is an achiral solvent, enantiomers have identical solubilities in hexane.

(d) Density is not a chiral property, and thus the two enantiomers have identical densities.

(e) The solubilities of two enantiomers in principle vary in an enantiomerically pure chiral solvent.

(f) Dipole moment is not a chiral property, and thus the two enantiomers have identical dipole moments.

(g) Because taste buds are chiral, they in principle differentiate among two enantiomers.