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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > February  >
In the Laboratory
Methylene Blue - Ascorbic Acid: An Undergraduate Experiment in Kinetics
T. Snehalatha, K. C. Rajanna, and P. K. Saiprakash
Department of Chemistry, Osmania University, Hyderabad - 500 007, India
Cover
February 1997
Vol. 74 No. 2
p. 228
Abstract
Clock reaction experiments with methylene blue (MB) and L-ascorbic acid (H2 A) were designed in aqueous sulfuric and hydrochloric acid media with a view to demonstrate and explain the concepts in chemical kinetics such as order of the reaction, effect of ionic strength, dielectric constant and temperature. On the basis of the obtained results, a plausible mechanism for the reduction of MB by H2 A has been proposed.
More Information
*  Citation
 Snehalatha, T.; Rajanna, K. C.; Saiprakash, P. K. J. Chem. Educ. 1997 74 228.
*  Keywords
 kinetics, demonstrations, mechanisms, redox reactions, laboratory instruction, physical chemistry
*  History
 Created:
Last Updated:		 July 29, 1999
June 23, 2005
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