User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/11/30

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==Objective==
==Objective==
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To conduct the salt test on the porphyrin film.
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To conduct the salt test on the porphyrin film, to take UV-Vis of the remaining solutions, and to measure the sodium content of the PVOH/glutaraldehyde film that was soaked in NaOH.
==Description==
==Description==
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<u>Porphyrin Salt Test</u>
<u>Porphyrin Salt Test</u>
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# The porphyrin film was removed from the 2% wt H<sub>2</sub>SO<sub>4</sub> and was placed in the sodium sulfate prepared last class.
+
# The porphyrin film was removed from the 2% wt H<sub>2</sub>SO<sub>4</sub> and was placed in 50 mL of the sodium sulfate prepared last class.
# The time for the porphyrin film to change from green to pink was recorded. (took  
# The time for the porphyrin film to change from green to pink was recorded. (took  
# The film was sliced to have the width of the UV-Vis cuvette.
# The film was sliced to have the width of the UV-Vis cuvette.
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# The sliced film was placed in the cuvette and a UV-Vis spectra was taken.
# The sliced film was placed in the cuvette and a UV-Vis spectra was taken.
# The sliced film was then placed into additional 2% wt H<sub>2</sub>SO<sub>4</sub> until it turned green.  (Time to turn green =  
# The sliced film was then placed into additional 2% wt H<sub>2</sub>SO<sub>4</sub> until it turned green.  (Time to turn green =  
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# Once the film slice had turned green, it was placed into the solution of aluminum sulfate prepared last class.
+
# Once the film slice had turned green, it was placed into 50 mL of the solution of aluminum sulfate prepared last class.

Revision as of 13:50, 30 November 2012

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Objective

To conduct the salt test on the porphyrin film, to take UV-Vis of the remaining solutions, and to measure the sodium content of the PVOH/glutaraldehyde film that was soaked in NaOH.

Description

Porphyrin Salt Test

  1. The porphyrin film was removed from the 2% wt H2SO4 and was placed in 50 mL of the sodium sulfate prepared last class.
  2. The time for the porphyrin film to change from green to pink was recorded. (took
  3. The film was sliced to have the width of the UV-Vis cuvette.
  4. The thickness of the film was measured.
  5. The sliced film was placed in the cuvette and a UV-Vis spectra was taken.
  6. The sliced film was then placed into additional 2% wt H2SO4 until it turned green. (Time to turn green =
  7. Once the film slice had turned green, it was placed into 50 mL of the solution of aluminum sulfate prepared last class.



Data

  • Add data and results here...

Notes

  • start time for soaking in sodium sulfate was 1:32



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