1. Evaporation: The liquid mixture is heated. The component with the lower boiling point evaporates first. This vapor rises.
2. Condensation: The vapor is then cooled, causing it to condense back into a liquid. This liquid is collected separately.
This process is repeated, with the vapor containing a higher concentration of the lower boiling point component each time. This allows for the separation of different liquids based on their boiling points.