User:Elaine Marie Robbins/Notebook/CHEM-496/2012/03/20: Difference between revisions

From OpenWetWare
Jump to navigationJump to search
(4 intermediate revisions by the same user not shown)
Line 9: Line 9:
==Objective==
==Objective==


To determine the concentration of Au<sup>+3</sup> left unreacted in solution in the fiber solution synthesized on [[User:Elaine Marie Robbins/Notebook/CHEM-496/2012/02/29 |02/29/12]].
To determine the concentration of Au<sup>+3</sup> left unreacted in solution in the fiber solution synthesized on [[User:Elaine Marie Robbins/Notebook/CHEM-496/2012/02/29 |02/29/12]] using electrochemistry.


==Description==
==Description==


# Make the following dilutions of chloroauric acid:
#* 5.00 mM
#* 1.00 mM
#* 500 μM
#* 100 μM
#* 50.0 μM
#* 10.0 μM
#* 5.00 μM
#* 1.00 μM
#* 500 nM
#* 100 nM
# Add 0.5 mL of 0.5 M KNO<sub>3</sub> to each solution.
# Run cyclic voltammetry using glassy carbon electrodes as both working and reference electrodes.


==Data==
==Data==


* Graph of current vs applied potential of each dilution of Au<sup>+3</sup>:
<center>[[Image:Current vs applied potential 3-20-12.png]]</center>


==Notes==
==Notes==
Detection limit for glassy carbon electrodes is not low enough to determine concentration of Au<sup>+3</sup> in fiber solution.


[[Category:Course]]
[[Category:Course]]

Revision as of 11:25, 21 March 2012

Determining Au+3 Concentration <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>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html>

Objective

To determine the concentration of Au+3 left unreacted in solution in the fiber solution synthesized on 02/29/12 using electrochemistry.

Description

  1. Make the following dilutions of chloroauric acid:
    • 5.00 mM
    • 1.00 mM
    • 500 μM
    • 100 μM
    • 50.0 μM
    • 10.0 μM
    • 5.00 μM
    • 1.00 μM
    • 500 nM
    • 100 nM
  2. Add 0.5 mL of 0.5 M KNO3 to each solution.
  3. Run cyclic voltammetry using glassy carbon electrodes as both working and reference electrodes.

Data

  • Graph of current vs applied potential of each dilution of Au+3:

Notes

Detection limit for glassy carbon electrodes is not low enough to determine concentration of Au+3 in fiber solution.



Retrieved from "https://openwetware.org/mediawiki/index.php?title=User:Elaine_Marie_Robbins/Notebook/CHEM-496/2012/03/20&oldid=593512"