Chlorobutanol Synthesis

The video tutorial explains how to synthesize chlorobutanol, a chemical with antibiotic and anesthetic properties. The process involves cooling acetone, adding chloroform and sodium hydroxide, and observing the reaction. The final product is purified through evaporation and washing, resulting in clean crystals.

Explain the significance of cooling the acetone before adding chloroform.

What should be done after the liquid becomes cloudy and yellow?