From the following, which best describes absolute alcohol?
A. Vodka.
B. 95% alcohol.
C. Water-free alcohol.
D. A mixture of 50 parts of alcohol to water.
100% alcohol (or 200 proof alcohol) or water-free alcohol is absolute alcohol. Absolute alcohol absorbs various amounts of water from the atmosphere and must be stored accordingly. Absolute is a type of vodka but that is a name brand and has little to do with chemistry.