User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/10/15: Difference between revisions
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==Objective== | ==Objective== | ||
To remake the glutaraldehyde films containing clay, to make a film with porphyrin, to measure sodium ion content using | To remake the glutaraldehyde films containing clay, to make a film with porphyrin, and to measure sodium ion content using a sodium electrode. | ||
==Description== | ==Description== | ||
Line 30: | Line 30: | ||
<u>Determining the Sodium Ion Content</u> | <u>Determining the Sodium Ion Content</u> | ||
* The sodium ion content of the | * The sodium ion content of the sodium standards ([]= 0.25,1,3,7,9 ppm) were measured | ||
# An 0.1 mL of ionic strength adjuster (4M solution containing NaOH) was added to a 3 mL of each solution to be tested, so that the pH of each solution would fall in the range of pH = 8 to 10. | # An 0.1 mL of ionic strength adjuster (4M solution containing NaOH) was added to a 3 mL of each solution to be tested, so that the pH of each solution would fall in the range of pH = 8 to 10. | ||
# | # The electrode was placed into each of the solutions and were allowed to equilibrate for 2 minutes. | ||
# This procedure was done for all of standards | |||
==Data== | |||
<u>Sodium Electrode Results</u> | |||
{|style="width:400px" | |||
|<u>Sample</u> | |||
|<u>Negative Voltage (mV)</u> | |||
|- | |||
* | |Water + Adjuster | ||
|***** | |||
|- | |||
|0.25 ppm + Adjuster | |||
|175.1 | |||
|- | |||
|1 ppm + Adjuster | |||
|170 | |||
|- | |||
|3 ppm + Adjuster | |||
|158.5 | |||
|- | |||
|7 ppm + Adjuster | |||
|146.4 | |||
|- | |||
|9 ppm + Adjuster | |||
|139.8 | |||
|} | |||
*All of the voltage values should be negative. The table feature would not allow the negative signs to be included. | |||
==Notes== | ==Notes== | ||
* For an ion selective electrode, higher concentrations have more negative voltages. | * For an ion selective electrode, higher concentrations have more negative voltages. | ||
* The film containing the porphyrin had a light pink color to it. | |||
[[Category:Course]] | [[Category:Course]] |
Revision as of 13:49, 26 November 2012
Experimental Chemistry | <html><img src="/images/9/94/Report.png" border="0" /></html> Main project page <html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>Previous entry<html> </html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html> | ||||||||||||||
ObjectiveTo remake the glutaraldehyde films containing clay, to make a film with porphyrin, and to measure sodium ion content using a sodium electrode. DescriptionMaking Glutaraldehyde Films
DataSodium Electrode Results
Notes
|