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Infrared spectroscopy
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Why molecules absorb infrared radiation

Why molecules absorb infrared radiation

Molecular vibrations showing stretching and bending, plus IR-active HCl stretching and IR-inactive O_2 stretching

Covalent bonds are not fixed rods. They vibrate by stretching and bending, and infrared spectroscopy measures which of these vibrations absorb infrared radiation.

Infrared spectroscopy Lesson

  1. AS Level
  2. /Chemistry
  3. /Infrared spectroscopy

Step-by-step lessons on Edexcel AS Level Chemistry Infrared spectroscopy. Each one builds up to exam-style questions.

Lessons