Polarography of o- and p-nitrophenyl acetic acids |
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| Authors: | P.S. Raghavan M.S. Sethi B.S. Garg Mahendra K. Gadia |
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| Affiliation: | 2. Department of Chemistry, A.R.S.D. College, New Delhi—110021, India;1. Atlanlic Analytical Services Limited, P.O. Box 489, Springdale, Newfoundland AOJ ITO, Canada |
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| Abstract: | Polarography of o- and p-nitrophenyl acetic acids has been carried out in aqueous buffers (pH 2.0 to 12.0) of constant ionic strength (1.0 M) at 30 ± 0.5 °C. The nitro group underwent a diffusion-controlled reduction (6e) over the whole pH range. The number of electrons involved in the reduction was found by incorporating the values of diffusion coefficients, obtained by using a McBain-Dawson cell, into the Ilkovic equation. Koutecky's method has been used to compute the kinetic parameters (αnaand ?log kof,h) for the reduction of the nitro group and a reduction mechanism is proposed. |
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| Keywords: | Author to whom correspondence should be addressed. |
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