Separation technique of homogenous mixtures. Case of liquid liquid mixture. Fractional distillation. Separating a mixture of two miscible liquids. Water and ethanol. Pour the mixture of water and ethanol in a distillation flask and put it to heat. Fractional distillation is a separation technique applied to a mixture of two miscible liquids with different boiling points. When the mixture in the distillation flask is heated up to 78 degrees Celsius, liquid ethanol boils and leaves the distillation flask as ethanol vapor. The temperature is kept at 78 degrees Celsius during the whole procedure. Water and ethanol vapor passes through the condenser where it is cooled down and condenses into liquid ethanol. Liquid ethanol flows down from the condenser and is collected in the Erlin-Mire flask. By fractional distillation, water and ethanol are collected separately. Water is recovered in the distillation flask while ethanol is collected in the Erlin-Mire flask. And of the separation technique of homogenous liquid liquid mixture.