How can a mixture of Ethyl alcohol and Water Be Separated?

Ethyl alcohol and water is one of the most classic examples used in Chemistry to explain the concept of fractional distillation — and once you understand why, you will never forget it. Alcohol and water mix with each other completely, forming a homogeneous solution with no separate layers visible at all. This means you simply cannot pour them apart or filter them — you need a technique that exploits the difference in their boiling points. Ethyl alcohol boils at 78.4°C while water boils at 100°C, and fractional distillation uses this difference to separate them efficiently and effectively.

• Boiling Point Difference: Ethyl alcohol (78.4°C) and water (100°C) have different boiling points — fractional distillation exploits this gap to separate them
• Process: The mixture is heated gradually — alcohol vapours rise first, pass through a fractionating column, cool down, and collect separately as liquid
• Fractionating Column: Packed column allows repeated condensation and vaporisation, giving a much cleaner separation than simple distillation
• Why Not Separating Funnel: Separating funnel works only for immiscible liquids like oil and water — alcohol and water mix completely
• Industrial Use: This exact principle is used in distilleries and petroleum refineries to separate mixtures based on boiling point differences