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Ultraviolet-Visible Spectrophotometry

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Proposed Topics

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Outline

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Ultraviolet-Visible Spectroscopy[1]

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  1. Show what a spectroscopy is.
  2. Describe the experiment this equipment is used for.
  3. Relate this to molecular absorption of ultraviolet and visible regions.

Absorption Spectroscopy[2]

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  1. Explain why at different pH, the rate of absorption is different.

Thymol blue

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  1. Define what thymol blue is.
  2. Add in diagrams of thymol blue at different pH.
  3. Relate this to UV-Vis Spectrophotometry.
  • a dye used as an acid-base indicator, with a pK value at 1.7 and another at 8.9; red at pH values below 1.2, yellow between 2.8 and 8, and blue above 9.6.[3]

References

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  1. ^ Kulesa, Craig. "What is Spectroscopy?". loke.as.arizona.edu. Retrieved 2017-10-05.
  2. ^ "UV-Visible Spectroscopy". www2.chemistry.msu.edu. Retrieved 2017-10-05.
  3. ^ "thymol blue". TheFreeDictionary.com. Retrieved 2017-10-05.
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