Most efficient way to purify household vinegar: distillation or freezing? I am aware that there are better ways to purify acetic acid out of a water-acid mixture than these, but which one out of distillation (using heat) and fractional freezing (using cold) would gain a higher concentration of acetic acid?
There is no acetic acid/water azeotrope, so distillation can produce glacial (pure) acetic acid.