Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Line plots for water, ethanol, butanol, hexanol, formic acid, acetic acid and citric acid. Comparison of vibration bands associated to hydroxyl groups (a), methyl and methylene groups (b), other vibrations associated to fingerprints (c), scissor vibration for water (d) and vibration of carbonyl groups (e).
