What is the function of solvent stills in a laboratory setting?

The function of solvent stills in a laboratory setting is to produce dry, oxygen-free, high-purity solvents. This is essential for a variety of chemical processes where impurities, moisture, or the presence of oxygen can adversely affect reactions or results. Solvent stills operate by distillation, which involves heating solvents to create vapor, and then cooling them to collect the purified liquid. This method effectively removes contaminants, ensuring that the solvents used in chemical reactions meet the high standards required for accurate and reliable laboratory work.

By focusing on producing high-purity solvents, solvent stills facilitate experiments that demand rigorous conditions, thereby minimizing the risk of contamination and improving the reliability of analytical results. The process also allows for the removal of moisture, which is crucial when working with reactive compounds sensitive to water. This is why option B appropriately describes the primary function of solvent stills in the laboratory.