Drying Isopropyl Alcohol with Salt - Salting Out скачать в хорошем качестве

Drying Isopropyl Alcohol with Salt - Salting Out

Isopropyl alcohol is miscible with water - it dissolves in water to produce a colourless solution. However, salt (NaCl) is an ionic compound that dissolves much better in water than in the organic isopropyl alcohol. When salt is added, most of it remains in the aqueous phase. The water molecules hydrate the Na+ and Cl- ions and are now unavailable to hydrate the alcohol molecules. The denser salt solution sinks and the alcohol floats, resulting in a phase separation. This is a separation technique known as "salting out", used commonly in organic chemistry and biochemical studies.