試題詳解

32. Distillation of mixtures of ethanol and water cannot increase the ethanol content of the mixture above 95% because this solution boils at a lower temperature than either pure ethanol or pure water. The term which describes this lower boiling mixture is _____.
(A) miscible
(B) azeotrope
(C) isoniazide
(D) epimerization
(E) none of these