Question

Sublimation is a technique that helps chemists to:

• A. break
• B. purify
• C. melt
• D. freeze

Answer 1

Answer: (B)

purify

Sublimation is a technique that helps chemists to purify. During sublimation, upon heating, a solid substance is converted to the gas phase without passing through the liquid phase. A solid is heated under vacuum. The solid volatilizes and condenses as a purified compound on a cooled surface, a non-volatile residue of impurities is left behind.