A Microscale Approach to Chemical Kinetics in the General Chemistry Laboratory: The Potassium Iodide Hydrogen Peroxide Iodine-Clock Reaction
Publication type: Journal Article
Publication date: 2010-12-09
scimago Q2
wos Q1
SJR: 0.596
CiteScore: 4.7
Impact factor: 2.9
ISSN: 00219584, 19381328
General Chemistry
Education
Abstract
A microscale laboratory for teaching chemical kinetics utilizing the iodine clock reaction is described. Plastic pipets, 3 mL volume, are used to store and deliver precise drops of reagents and the reaction is run in a 24 well plastic tray using a total 60 drops of reagents. With this procedure, students determine the rate of reaction and the order of reaction as a function of iodide ion concentration or hydrogen peroxide concentration. Six reaction concentrations are run concurrently in about an hour. The students also calculate the value of the rate constant and determine the concentration of an unknown iodide ion sample. The procedure has been adopted to run at a lower temperature to determine the energy of activation. The experiment teaches the principles of chemical kinetics to first-year college students and can also be used in second-year or advanced-placement high school chemistry classes.
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Total citations:
19
Citations from 2024:
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(26.32%)
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GOST
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Sattsangi P. D. A Microscale Approach to Chemical Kinetics in the General Chemistry Laboratory: The Potassium Iodide Hydrogen Peroxide Iodine-Clock Reaction // Journal of Chemical Education. 2010. Vol. 88. No. 2. pp. 184-188.
GOST all authors (up to 50)
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Sattsangi P. D. A Microscale Approach to Chemical Kinetics in the General Chemistry Laboratory: The Potassium Iodide Hydrogen Peroxide Iodine-Clock Reaction // Journal of Chemical Education. 2010. Vol. 88. No. 2. pp. 184-188.
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RIS
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TY - JOUR
DO - 10.1021/ed100140w
UR - https://doi.org/10.1021/ed100140w
TI - A Microscale Approach to Chemical Kinetics in the General Chemistry Laboratory: The Potassium Iodide Hydrogen Peroxide Iodine-Clock Reaction
T2 - Journal of Chemical Education
AU - Sattsangi, Prem D
PY - 2010
DA - 2010/12/09
PB - American Chemical Society (ACS)
SP - 184-188
IS - 2
VL - 88
SN - 0021-9584
SN - 1938-1328
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2010_Sattsangi,
author = {Prem D Sattsangi},
title = {A Microscale Approach to Chemical Kinetics in the General Chemistry Laboratory: The Potassium Iodide Hydrogen Peroxide Iodine-Clock Reaction},
journal = {Journal of Chemical Education},
year = {2010},
volume = {88},
publisher = {American Chemical Society (ACS)},
month = {dec},
url = {https://doi.org/10.1021/ed100140w},
number = {2},
pages = {184--188},
doi = {10.1021/ed100140w}
}
Cite this
MLA
Copy
Sattsangi, Prem D.. “A Microscale Approach to Chemical Kinetics in the General Chemistry Laboratory: The Potassium Iodide Hydrogen Peroxide Iodine-Clock Reaction.” Journal of Chemical Education, vol. 88, no. 2, Dec. 2010, pp. 184-188. https://doi.org/10.1021/ed100140w.