Spectrophotometric study of acid-base equilibria of 4-(2-benzothiazolylazo)resorcinol and 4-(2-benzothiazolylazo)salicylic acid
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
Spectrophotometric study of acid-base equilibria of 4-(2-benzothiazolylazo)resorcinol and 4-(2-benzothiazolylazo)salicylic acid
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| Creator |
Abu-Bakr, Mohamed S
El-Shahawy, Anwar S Ahmed, Seddique M |
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| Description |
789-793
The visible absorption spectra of 4-(2-benzothiazolylazo)resorcinol and 4-(2-benzothiazolylazo) salicyclic acid have been recorded in aquo-organic solvent mixtures in the <em>p</em>H range 0.5-12.0. The spectral changes have been explained in terms of shifts in equilibria amongst different molecular and ionic species of BTAR and BTAS existing in solution. The <em>pK</em><sub>a</sub> values corresponding to the different ionisation steps have been determined at 25°C and 1=0.1 <em>M </em> (KNO<sub>3</sub>) by graphical analysis of the absorbance-<em>p</em>H curves. |
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| Date |
2018-03-21T08:44:32Z
2018-03-21T08:44:32Z 1993-09 |
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| Type |
Article
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| Identifier |
0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/43970 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJC-A Vol.32A(09) [September 1993]
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