Spectroscopy and Chromatography

Question 1

Types of Spectroscopy #1

Answer 1

spectroscopy measures how much light is reflected off or absorbed by a molecule (bond).

Infrared (IR) spectroscopy: the bond vibration frequencies in a molecule 측정, determine the functional group. -higher frequency(higher energy)=shorter wavelength -Covalent bonds vibrate at only certain allowable frequencies

Question 2

Types of Spectroscopy #2

Answer 2

Nuclear magnetic resonance (NMR) spectroscopy: signals from hydrogen atoms 감지 distinguish isomers.

Question 3

Types of Spectroscopy #3

Answer 3

Ultraviolet (UV) spectroscopy: electron transitions to determine bonding patterns.