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The Remarkable Resilience of Beer's Law

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Mark A. Muyskens and Eric T. Sevy

Calvin College, Department of Chemistry, 3201 Burton St. S. E., Grand Rapids, MI 49546

J. Chem. Educ., 1997, 74 (9), p 1138

DOI: 10.1021/ed074p1138

Publication Date (Web): September 1, 1997

Section:

History, Education, and Documentation

Abstract

Described is a case where Beer's law holds to a remarkable degree. Linear absorbance over three orders of magnitude is shown for both pyrazine and 2-methylpyrazine absorption of 266-nm laser light in a 3-m gas cell. The experimental approach is described and discussion includes how the properties of laser light play a role in these results. This case provides a counter-example for a discussion of deviations from Beer's law.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Subject):

Instrumental Methods

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Competition between Photochemistry and Energy Transfer in UV-Excited Diazabenzenes. 4. UV Photodissociation of 2,3-, 2,5-, and 2,6-Dimethylpyrazine
Andrew M. Duffin, Jeremy A. Johnson, Mark A. Muyskens, and Eric T. Sevy
The Journal of Physical Chemistry A2007 111 (51), 13330-13338
- Competition between Photochemistry and Energy Transfer in UV-Excited Diazabenzenes. 4. UV Photodissociation of 2,3-, 2,5-, and 2,6-Dimethylpyrazine
  Andrew M. Duffin, Jeremy A. Johnson, Mark A. Muyskens, and Eric T. Sevy
  The Journal of Physical Chemistry A2007 111 (51), 13330-13338
  The quantum yield for HCN formation via 248 nm photodissociation of 2,3-, 2,5-, and 2,6-dimethylpyrazine (DMP, C6N2H8) was measured using diode laser probing of the HCN photoproduct. The total quantum yield is = 0.039 0.07, 0.14 0.02, and 0.30 ...
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