Thermodynamics of the [CoCl(iPrOH)3]+ to [CoCl(iPrOH)2(MeOH)3]+ Reaction: A General Chemistry Laboratory Exercise
Publication type: Journal Article
Publication date: 2012-01-13
scimago Q2
wos Q1
SJR: 0.596
CiteScore: 4.7
Impact factor: 2.9
ISSN: 00219584, 19381328
General Chemistry
Education
Abstract
In this general chemistry laboratory exercise, the absorbance of [CoCl(iPrOH)3]+, where iPrOH is isopropyl alcohol, is used to determine the equilibrium constants for its reaction with methanol to form [CoCl(iPrOH)2(MeOH)3]+ in the temperature range ∼10 to 20 °C. The absorbance versus concentration calibration plot is determined by sequential additions of a concentrated [CoCl(iPrOH)3]Cl standard to iPrOH. The equilibrium mixture is cooled in a CaCl2–ice bath, and measurements of temperature and absorbance are made at various time intervals as the solution warms to room temperature. The variation in the equilibrium constant as a function of temperature is used to determine the Gibbs energy, enthalpy, and entropy.
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Nyasulu F. et al. Thermodynamics of the [CoCl(iPrOH)3]+ to [CoCl(iPrOH)2(MeOH)3]+ Reaction: A General Chemistry Laboratory Exercise // Journal of Chemical Education. 2012. Vol. 89. No. 4. pp. 536-539.
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Nyasulu F., Nething D., Barlag R., Wise L., Arthasery P. Thermodynamics of the [CoCl(iPrOH)3]+ to [CoCl(iPrOH)2(MeOH)3]+ Reaction: A General Chemistry Laboratory Exercise // Journal of Chemical Education. 2012. Vol. 89. No. 4. pp. 536-539.
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TY - JOUR
DO - 10.1021/ed200097x
UR - https://doi.org/10.1021/ed200097x
TI - Thermodynamics of the [CoCl(iPrOH)3]+ to [CoCl(iPrOH)2(MeOH)3]+ Reaction: A General Chemistry Laboratory Exercise
T2 - Journal of Chemical Education
AU - Nyasulu, Frazier
AU - Nething, Daniel
AU - Barlag, Rebecca
AU - Wise, Lindy
AU - Arthasery, Phyllis
PY - 2012
DA - 2012/01/13
PB - American Chemical Society (ACS)
SP - 536-539
IS - 4
VL - 89
SN - 0021-9584
SN - 1938-1328
ER -
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BibTex (up to 50 authors)
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@article{2012_Nyasulu,
author = {Frazier Nyasulu and Daniel Nething and Rebecca Barlag and Lindy Wise and Phyllis Arthasery},
title = {Thermodynamics of the [CoCl(iPrOH)3]+ to [CoCl(iPrOH)2(MeOH)3]+ Reaction: A General Chemistry Laboratory Exercise},
journal = {Journal of Chemical Education},
year = {2012},
volume = {89},
publisher = {American Chemical Society (ACS)},
month = {jan},
url = {https://doi.org/10.1021/ed200097x},
number = {4},
pages = {536--539},
doi = {10.1021/ed200097x}
}
Cite this
MLA
Copy
Nyasulu, Frazier, et al. “Thermodynamics of the [CoCl(iPrOH)3]+ to [CoCl(iPrOH)2(MeOH)3]+ Reaction: A General Chemistry Laboratory Exercise.” Journal of Chemical Education, vol. 89, no. 4, Jan. 2012, pp. 536-539. https://doi.org/10.1021/ed200097x.