Journal of Chemistry

Journal of Chemistry / 2009 / Article

Open Access

Volume 6 |Article ID 705976 |

P. Srinivasa Rao, B. Srikanth, V. Samba Siva Rao, C. Kamala Sastry, G. Nageswara Rao, "Protonation Equilibria of L-Aspartic, Citric and Succinic Acids in Anionic Micellar Media", Journal of Chemistry, vol. 6, Article ID 705976, 8 pages, 2009.

Protonation Equilibria of L-Aspartic, Citric and Succinic Acids in Anionic Micellar Media

Received13 Oct 2008
Accepted12 Dec 2008


The impact of sodium lauryl sulphate (SLS) on the protonation equilibria of L-aspartic acid, citric acid and succinic acid has been studied in various concentrations (0.5-2.5% w/v) of SLS solution maintaining an ionic strength of 0.16 mol dm-3 at 303 K. The protonation constants have been calculated with the computer program MINIQUAD75 and the best fit models have been calculated based on statistical parameters. The trend of log values of step-wise protonation constants with mole fraction of the medium has been explained based on electrostatic and non-electrostatic forces operating on the protonation equilibria. The effects of errors on the protonation constants have also been presented.

Copyright © 2009 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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