Polarography of 5-nitro-ace-naphthene
TL;DR: Polarography of 5-nitro-ace-naphthene has been carried out in the pH range 1.7 to 11.35 using different buffer systems in 40% ethanol medium at a constant temperature 33 ± 0.2°C and ionic strength, 0.27 M as mentioned in this paper.
About: This article is published in Electrochimica Acta.The article was published on 1970-08-01. It has received 5 citations till now. The article focuses on the topics: Polarography.
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TL;DR: In this article, polarography of 8-hydroxyquinoline, 7-nitro-8-hydroxenequinoline-5-sulphonic acid and 8-hexene-quinoline 5-SCL was carried out in aqueous buffer with constant ionic strength (0·54 M) at 25 ± 0·1°C.
12 citations
TL;DR: In this article, the diffusion coefficient of 4-nitrophthalic acid (NPA) at dropping mercury electrode over a wide range of PH, is shown to be 0.713×10-3 cm2sec-1.
Abstract: The–NO2 group reduction in 4-nitrophthalic acid (NPA) at dropping mercury electrode over a wide range of PH, is irreversible and diffusion controlled. Ill defined waves preceded the —NO2 group wave, were observed between PH 7 and 12 whereas at PH 5.0, a rounded maximum appears. The a. c. reduction of NPA at PH 12.0, provides two peaks, first peak corresponds to d. c. pre-step, is essentially due to adsorption phenomena whereas other peak is the reduction wave. Using McBain Down cell and King-cathcart equation the diffusion coefficient of NPA is 0.713×10-3 cm2sec-1. Six electrons are being involved in nitro group reduction and mechanism of the reduction was suggested. The kinetic parameters in absence and presence of ionic and non-ionic surfactants were determined. The reduction process becomes more and more irreversible as surface activity of organic compounds increases. Ionic surfactants are effective in increasing the value of —log K° than the non-ionic surfactants. The value of ana decreases regularly by the presence of compounds having regular increase of surface activity.
1 citations
TL;DR: In this paper, 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.
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TL;DR: In this paper, the kinetics of the conversion of 5-nitro-ace-naphthene into polarographic inactive aci-form have been investigated and found to be of second order.
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