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1996
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In the Laboratory
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A Student-Designed Potentiometric Titration: Quantitative Determination of Iron(II) by Caro's Acid Titration
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Joyce R. Powell, Sheryl A. Tucker, William E. Acree Jr.
Department of Chemistry, University of North Texas, Denton, TX 76203-0068
Jennifer A. Sees, Lindsey H. Hall
Texas Instruments, PO Box 650311, Mail Station 301, Dallas, TX 75265
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October 1996
Vol. 73 No. 10
p. 984
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| Abstract |
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A laboratory experiment involving the feasibility of using Caro's acid, H2SO5, as a titrant in the potentiometric determination of iron (II) is presented. Specific items considered in the experiment include (i) method of endpoint detection; (ii) shelf-life stability of titrant; (iii) accuracy, relative precision and experimental uncertainty; and (iv) which common cations and/or anions (if any) interfere with the titration. Typical student results gave iron (II) concentrations within 1-2 % of the "true" values. Of the 14 cation/anion pairs suggested in the paper, only time(II) was found to interfere with the quantitative determination of iron (II) using Caro's acid titrant.
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| More Information |
 Citation |
Powell, Joyce R.; Tucker, Sheryl A.; Acree Jr., William E.; Sees, Jennifer A.; Hall, Lindsey H. J. Chem. Educ. 1996 73 984.
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Keywords |
Analytical Chemistry
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History |
Created:
Last Updated: |
September 22, 1999
February 21, 2006
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| Home > JCE Print > Journal of Chemical Education > Issues >
1996
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984
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