European Journal of Chemistry 2012, 3(1), 71-74. doi:10.5155/eurjchem.3.1.71-74.474

Ion association and solvation behavior of nicotinium dichromate in water-N,N-dimethyl formamide mixtures by a conductometric study


Veerati Radhika (1,*) , Nalamasa Srinivas (2) , Prerepa Manikyamba (3)

(1) Department of Chemistry, Kakatiya University, Warangal-506009, India
(2) Department of Chemistry, Varadha Reddy College of Engineering, Warangal-506371, India
(3) Department of Chemistry, Kakatiya University, Warangal-506009, India
(*) Corresponding Author

Received: 07 Jun 2011, Accepted: 14 Aug 2011, Published: 31 Mar 2012

Abstract


The electrical conductance of nicoitinium dichromate has been measured in water-N,N-dimethyl formamide mixtures of different compositions in the temperature range 283-313 K. The limiting molar conductance, Lo and the association constant of the ion-pair, KA have been calculated using Shedlovsky equation. The effective ionic radii (ri) of (C6H6O2)+ and (C6H6O2NCr2O7)- ions have been determined from Lio values using Gill’s modification of the Stokes law. The influence of the mixed solvent composition on the solvation of ions has been discussed with the help of ‘R’-factor. Thermodynamic parameters are evaluated and reported. The results of the study have been interpreted in terms of ion-solvent interactions and solvent properties.

3_1_71_74_800


Keywords


R-factor; Ionic radius; Solvation number; Association constant; Ionic Walden product; Limiting molar conductance

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DOI: 10.5155/eurjchem.3.1.71-74.474

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How to cite


Radhika, V.; Srinivas, N.; Manikyamba, P. Eur. J. Chem. 2012, 3(1), 71-74. doi:10.5155/eurjchem.3.1.71-74.474
Radhika, V.; Srinivas, N.; Manikyamba, P. Ion association and solvation behavior of nicotinium dichromate in water-N,N-dimethyl formamide mixtures by a conductometric study. Eur. J. Chem. 2012, 3(1), 71-74. doi:10.5155/eurjchem.3.1.71-74.474
Radhika, V., Srinivas, N., & Manikyamba, P. (2012). Ion association and solvation behavior of nicotinium dichromate in water-N,N-dimethyl formamide mixtures by a conductometric study. European Journal of Chemistry, 3(1), 71-74. doi:10.5155/eurjchem.3.1.71-74.474
Radhika, Veerati, Nalamasa Srinivas, & Prerepa Manikyamba. "Ion association and solvation behavior of nicotinium dichromate in water-N,N-dimethyl formamide mixtures by a conductometric study." European Journal of Chemistry [Online], 3.1 (2012): 71-74. Web. 16 Sep. 2019
Radhika, Veerati, Srinivas, Nalamasa, AND Manikyamba, Prerepa. "Ion association and solvation behavior of nicotinium dichromate in water-N,N-dimethyl formamide mixtures by a conductometric study" European Journal of Chemistry [Online], Volume 3 Number 1 (31 March 2012)

DOI Link: https://doi.org/10.5155/eurjchem.3.1.71-74.474

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