Abstract
The solvent influence on the reduction kinetics of methyl violet with iodide in binary mixture of aqueous isopropanol was investigated spectrophotometrically. The absorption spectra of methyl violet were recorded in water, aqueous isopropanol and absolute isopropanol. In these solvents λmax was in the range from 580.5 to 582.5 nm. The CNIBS/R-K model was used to calculate the solvatochromic parameters in a binary mixture; polynomial equation was also applied to describe the experimental data. The transition energies (E T) were calculated. They show bathochromic shift with the decrease in the polarity of the solvent. The temperature was varied from 298–318 K, while the pH of the reaction was maintained at 4.99 and 6.00. The reduction reaction was found to be first order by potassium iodide and zero order by methyl violet. The thermodynamic parameters were also evaluated to support the kinetic data.
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C. Reichardt, S. Asharin-Fard, A. A. Blum, M. Eschner, A. Mehranpour, P. Milart, T. Niem, G. Schafer, and M. Wilk, Pure Appl. Chem. 65, 2593 (1993).
A. Habibi-Yangjeh, Bull. Korean Chem. Soc. 25, 1165 (2004).
J. Y. Choi, E. J. Park, S. H. Chang, and T. J. Kang, Bull. Korean Chem. Soc. 30, 1452 (2009).
M. Khodadadi-Moghaddam, A. Habibi-Yangjeh, and M. R. Reza Gholami, Monatsh. Chem. 140, 329 (2009).
M. Koel, Z. Naturforsch. A 63, 505 (2008).
T. Bevilaqua, T. F. Gonçalves, G. de Cristina, C. G. Venturini, and V. G. Machado, Spectrochim. Acta A 65, 535 (2006).
D. S. Bhuvaneshwari and K. P. Elango, Z. Naturforsch. A 63, 493 (2008).
K. K. Patel, Chem. Sin. 2, 245 (2011).
O. Olanrewaju, J. Ige, O. Soriyan, O. Grace, O. S. Esan, and O. Olanrewaju, Acta Chim. Slov. 54, 370 (2007).
A. Raducan, M. Puiu, and D. Oancea, Ann. Univ. Bucharest, Chim., Anul XVI (Ser. Nova) 1, 31 (2007).
A. A. Olajire and A. J. Olajide, J. Phys. Chem. Biophys. 4, 1 (2014).
M. A. Tabbara and M. M. El Jamal, J. Univ. Chem. Technol. Metall. 47, 275 (2012).
M. Hassan, M. D. AlAhmadi, and M. Mosaid, Arab. J. Chem. 8, 72 (2015).
F. Begum, Y. A. Mollah, M. M. Rahman, and A. B. H. Susan, J. Bangladesh Chem. Soc. 24, 173 (2011)
R. Y. Talman, S. Gokturk, and M. Tuncay, Colloids Surf. A: Physicochem. Eng. Asp. 270–271, 72 (2005).
M. A. Al-Khaldi, E. A. Moussa, and N. A. Al-Omair, Al-Azhar Bull. Sci. 11, 219 (2000).
L. M. A. Fayoumi, M. A. Ezzedine, H. H. Akel, and M. M. nel Jamal, Port. Electrochim. Acta 30, 121 (2012).
Y. Mohammed and O. A. Komolafe, Orient. J. Chem. 26, 373 (2010).
O. Y. Orhan, M. C. Ozturk, A. Seker, and E. Alper, Turk. J. Chem. 39, 13 (2015).
B. Pare, A. Soni, and V. W. Bhagwat, Rasayan J. Chem. 1, 413 (2008).
R. Saeed, M. Ashfaq, and Fahimuddin, Chin. J. Chem. 28, 891 (2012).
R. Saeed, M. Ashfaq, and S. R. Khan, Asian J. Chem. 22, 1787 (2010).
R. Saeed, S. R. Khan, and M. Ashfaq, Asian J. Chem. 24, 3745 (2012).
M. Ashfaq, R. Saeed, S. Masood, and S. R. Khan, Chiang Mai J. Sci. 42, 963 (2015).
S. R. Khan, R. Saeed, M. Ashfaq, and S. Masood, Wulfenia J. 21, 213 (2014).
A. Maitra and S. Bagchi, J. Mol. Liq. 137, 131 (2008).
K. J. Laidler, Chemical Kinetics, 2nd ed. (McGraw-Hill, New York, 1965).
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Ashfaq, M., Saeed, R., Khan, S.R. et al. Solvatochromic effect and kinetics of methyl violet reduction with potassium iodide in water–isopropanol mixtures. Russ. J. Phys. Chem. 90, 2556–2563 (2016). https://doi.org/10.1134/S0036024416130136
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DOI: https://doi.org/10.1134/S0036024416130136