Lab & Webshop: Greenhouse Gases II
Energy Absorbance, Infrared Spectroscopy, Molecular Motion, Vibrational Energies
Energy / Sunlight / EM Spectrum / Infrared / Ultraviolet / Greenhouse Gases
Refer to the course Lab Manual:
1) Complete the table with a list of the respective frequencies (wavenumber, cm-1) of the infrared (IR) absorbances and their corresponding percent transmission in the spectrum for your assigned greenhouse gas. (Check in lab for individual gas assignment) Consult the ChemConnections, MC2/Chemlinks and NIST WebBook pages: http://chemistry.beloit.edu/Warming/pages/infrared.html
2) Using IR Tutor (downloadable from: http://chemistry.beloit.edu/Warming/pages/infrared.html), view the IR spectrum of your assigned greenhouse gas. For each of the absorbances (peaks) that you listed in question #1, list the type of molecular vibration that corresponds to each of the absorbances in the spectrum. Eg. anti-symmetrical stretching vibration.
© Copyright 1998-2010 R.J. Rusay