Difference between revisions of "User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/11/30"

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==Objective==
 
==Objective==
  
To conduct the salt test on the porphyrin film.
+
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==
 +
 +
* The acetone that the dye film was placed in was changed.
 +
  
 
<u>Porphyrin Salt Test</u>
 
<u>Porphyrin Salt Test</u>
  
# 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 =  
# 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.
  
  
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==Notes==
 
==Notes==
This area is for any observations or conclusions that you would like to note.
 
 
 
Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.
 
 
[[Category:Course]]
 
[[Category:Miscellaneous]]
 
  
 +
* start time for soaking in sodium sulfate was 1:32
 +
* The old acetone that the dye film was placed in (on Wednesday) was still clear in color.
 +
* The H<sub>2</sub>SO<sub>4</sub> solution that the porphyrin has been soaking in since Wednesday was green (when the film was removed from it)
 +
* At the end of 2 hours and 15 minutes, the porphyrin film was still green, so we left it to soak in the sodium sulfate solution over the weekend.  UV-Vis will be taken on Monday.
  
  

Revision as of 12:46, 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

  • The acetone that the dye film was placed in was changed.


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
  • The old acetone that the dye film was placed in (on Wednesday) was still clear in color.
  • The H2SO4 solution that the porphyrin has been soaking in since Wednesday was green (when the film was removed from it)
  • At the end of 2 hours and 15 minutes, the porphyrin film was still green, so we left it to soak in the sodium sulfate solution over the weekend. UV-Vis will be taken on Monday.