Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Edward Koubek"'
Autor:
Christine L. Copper, Edward Koubek
Publikováno v:
Inorganica Chimica Acta. 288:229-232
Several studies of the Mo(VI) and W(VI) catalyzed reaction of H2O2 with various substrates have been documented previously. The experiments described herein attempt to settle some apparent contradictions in these reports. Specifically, the oxidation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed08f1ccf18d749f6361125ef0dbdd37
https://doi.org/10.1016/s0020-1693(99)00079-1
https://doi.org/10.1016/s0020-1693(99)00079-1
Autor:
Edward Koubek, Donald A. House
Publikováno v:
Inorganica Chimica Acta. 191:103-107
The rate of the NH → ND exchange reaction for cis-PtCl2(NH3)2, PtCl2(en) and PtCl2(tn) has been measured in succinate buffered D2O. Samples of the complex were precipitated as the HgCl2 adduct, at various times, and the extent of deuteration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09b68fc881709304b23e255ddd4ea17c
https://doi.org/10.1016/s0020-1693(00)80335-7
https://doi.org/10.1016/s0020-1693(00)80335-7
Autor:
Christine L. Copper, Edward Koubek
Publikováno v:
Journal of Chemical Education. 78:652
An experiment is presented which allows students to balance an oxidation-reduction reaction equation and use the reaction to analyze a consumer product. The experiment calls for students to balance the reaction of H2O2 and MnO4- two different ways (o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6667adad0a5e58709bec71f72249b98a
https://doi.org/10.1021/ed078p652
https://doi.org/10.1021/ed078p652
Autor:
Edward Koubek, Christine L. Copper
Publikováno v:
Journal of Chemical Education. 76:1714
By performing this experiment, students in general and introductory physical chemistry can learn more about the effect of a catalyst on a chemical reaction. This experiment, which is a modified version of the traditional iodine clock reaction, allows
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fbef21d5231a578c303a5e9f04f4db3
https://doi.org/10.1021/ed076p1714
https://doi.org/10.1021/ed076p1714
Autor:
Edward Koubek
Publikováno v:
Journal of Chemical Education. 76:756
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dc0172adf67c7e784293118cd2f9c6d
https://doi.org/10.1021/ed076p756.2
https://doi.org/10.1021/ed076p756.2
Autor:
Edward Koubek
Publikováno v:
Journal of Chemical Education. 75:60
This demonstration deals with the amphoteric behavior of Al3+ ions in aqueous solution. Slow addition of OH- to an Al3+ containing solution results in the formation of a precipitate which redissolves upon further addition of OH- .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::435a9e08caf31bad07b4489714c450a3
https://doi.org/10.1021/ed075p60.1
https://doi.org/10.1021/ed075p60.1
Autor:
Christine L. Copper, Edward Koubek
Publikováno v:
Journal of Chemical Education. 75:87
A kinetics experiment for general or physical chemistry students is presented. The common iodine clock reaction is modified and the initial rate method is used to observe the role of catalyst in the reactions through activation energy calculations. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e434d8d4412f63a1d04ac3230e10e72
https://doi.org/10.1021/ed075p87
https://doi.org/10.1021/ed075p87
Autor:
Edward Koubek, William B. Heuer
Publikováno v:
Journal of Chemical Education. 74:313
An introductory, two-part classroom/laboratory activity demonstrating the mechanism of absorption of infrared light by small molecules is described. A model for molecular vibration is introduced during pre-lab discussion, and a mechanism by which suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adcfcd77095a3dd09148a23547a862b7
https://doi.org/10.1021/ed074p313
https://doi.org/10.1021/ed074p313
Autor:
Edward Koubek, Mark Elert
Publikováno v:
Journal of Chemical Education. 73:947
A discussion of crystal field theory is usually included in general chemistry texts. This is likely to be one of only two places in the text - the other is the description of the hydrogen atom - where the important concept of light absorption by atom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f28213c85a78e18e7cbc53221a6b6960
https://doi.org/10.1021/ed073p947
https://doi.org/10.1021/ed073p947
Autor:
C. J. Battaglia, M. L. Haggett, Khairat M. Ibne-Rasa, Edward Koubek, John O. Edwards, H. Y. Pyun
Publikováno v:
Journal of the American Chemical Society. 85:2263-2268
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec6c5ca1f7444d8a1a49995e7a5af1c3
https://doi.org/10.1021/ja00898a016
https://doi.org/10.1021/ja00898a016