For 10 points, name this lab technique that separates liquids based on boiling point, which is used to purify ethanol.
The classic method to generate pure oxygen and nitrogen is to do this process to air at cryogenic temperature. The outlet streams of this process are called the bottoms and overhead. During this process, the rectifying and stripping sections intersect at the feed. Three-neck round-bottom flasks are attached to packed columns for this process in the lab. No matter the (*) reflux ratio, the naive form of this technique cannot break an azeotrope. The tallest columns at an oil refinery are used for this process, to fractionate petroleum. For 10 points, name this lab technique that separates liquids based on boiling point, which is used to purify ethanol.
The classic method to generate pure oxygen and nitrogen is to do this process to air at cryogenic temperature.
distillation