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| Home > JCE Print > Journal of Chemical Education > Issues >
2004
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In the Laboratory
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The Chemistry of Photographic Color Dye Formation
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Bruce E. Kahn
Imaging and Photographic Technology, Rochester Institute of Technology, Rochester, NY 14623-5604
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May 2004
Vol. 81 No. 5
p. 694
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| Abstract |
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A laboratory activity is described where black and white photographs are converted to color images in a variety of ways. This visual experiment involves a number of chemical concepts such as oxidation and reduction, stoichiometry, acids and bases, pH, nucleophilic reactions, conjugation, complexation, solubility, and reversibility. Unlike most photographic processes, this activity can be conducted in ordinary room light. Students learn the chemistry involved in five types of reactions involved in the color photographic process. One advantage of this activity is that the students can choose their own procedure, allowing them to exercise their creativity while learning chemistry. Students find the visual results of this activity appealing. Unlike most chemistry laboratories, at the conclusion of this laboratory the students have a color image that they can keep or display. This activity is appropriate for a high school or college level. The materials required are inexpensive, readily available, and easy to obtain.
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| Supplement |
Detailed discussion of the photographic process, instructions for the students, a prelab exercise, and a list of the sources of the chemicals are available.
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 Contents |
JCE2004p0694W.doc (Microsoft Word)
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| Download |
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| More Information |
Citation |
Kahn, Bruce E. J. Chem. Educ. 2004 81 694.
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Keywords |
Acid–Base Chemistry; Consumer Chemistry; Dyes; General Chemistry; Industrial Chemistry; Inquiry-Based / Discovery Method; Introductory / High School Chemistry; Laboratory Instruction; Photochemistry; Redox Reactions
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History |
Created:
Last Updated: |
April 1, 2004
February 18, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
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