Question

What type of spectroscopy would be the best tool to analyze a clear and colorless solution for the presence of a functional group like an alcohol group $(-OH)$?

• A. UV spectroscopy.
• B. IR spectroscopy.
• C. Mass spectroscopy.
• D. Photoelectron spectroscopy.

Answer 1

Answer: (B)

IR spectroscopy.

Functional groups are best analyzed by IR spectroscopy.IR is infrared spectroscopy that works in IR region of electromagnetic radiations. stretching frequencies of functional groups are measured due to their vibration around bonds. Every functional groups have their particular stretching frequency range.In this way functional groups are analyzed by IR.