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This paper presents the effect of two dissolved inorganic salts (zinc chloride, ZnCl2 and ammonium chloride, NH4Cl) on the enthalpy of mixing (HE) of 2-propanol + acetic acid binary system measured at 303.15 K using an isothermal displacement calorimeter with vapour space. A decreasing trend in the excess enthalpy of mixing values in the presence of ZnCl2 and NH4Cl indicate the endothermic behavior of this system. The Redlich-Kister equation has been used to fit the experimental HE data. The deviations from the ideal value and binary parameters were calculated and reported.
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Tom
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20--23
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Bibliogr. 19 poz., rys., tab.
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autor
autor
autor
autor
- Department of Chemistry, Anna University, Tiruchirappalli - Pattukkottai Campus 614 701, India, mdkumar@annauniv.edu
Bibliografia
- 1. Furter, W. F. & Cook, R. A. (1967). Salt effect in distillation: A literature review. Int. J. Heat Mass Tran. 10(1), 23-36. DOI: 10.1016/0017-9310(67)90181-0.
- 2. Jacques, D. & Furter, W. F. (1972). Salt effect in vapour liquid equilibrium: Testing the thermodynamic consistency of ethanol-water saturated with inorganic salts. AIChE J. 18(2), 343-346. DOI: 10.1002/aic.690180216.
- 3. Long, F. A. & McDevit, W. F. (1952). Activity coefficients of nonelectrolytes solutes in aqueous salt solutions. Chem. Rev. 51(1), 119-169. DOI: 10.1021/cr60158a004.
- 4. Furter, W. F. (1976). Correlation and prediction of salt effect in vapor-liquid equilibrium. In W. F. Furter, Thermodynamic behavior of electrolytes in mixed solvents (pp. 26-39), Advances in chemistry series 155. American Chemical Society, Washington DC. DOI: 10.1021/ba-1976-0155.ch003.
- 5. Sada, E., Morisue, T. & Miyahara, K. (1975). Salt effect in vapour liquid equilibrium of tetra hydrofuran-water system. J. Chem. Eng. Data. 20(3), 283-287. DOI: 10.1021/je60066a016.
- 6. Meranda, D. & Furter, W. F. (1974). Salt effect on vapour liquid equilibrium: some anomalies. AIChE J. 20(1), 103-108. DOI: 10.1002/aic.690200113.
- 7. Nowicka, B., Osinska, S. T. & Gatta, G. D. (1997). Enthalpies of solution of N-acetylamino acid amides in aqueous solutions of electrolytes at the temperature 298.15 K. J. Chem. Thermodyn. 29(9), 1017-1024. DOI: 10.1006/jcht.1997.0218.
- 8. Zhang, R., Yan, W., Wang, X. & Lin, R. (2005). Molar excess enthalpies of ethyl acetate + alkanols at T = 298.15 K, p = 10.0 MPa. Thermochim. Acta. 429(2), 155-161. DOI: 10.1016/j.tca.2005.03.009.
- 9. Rajendran, M., Renganarayanan, S., Madhavan, P. R. & Srinivasan, D. (1988). Effect of dissolved inorganic salts on vapour liquid equilibria and heat of mixing of methanol - ethyl acetate system. Chem. Eng. Commun. 74(1), 179-193. DOI: 10.1080/00986448808940458.
- 10. Rajendran, M., Renganarayanan, S., Madhavan, P. R. & Srinivasan, D. (1989). Effect of dissolved salts on heat of mixing of three miscible binary system. J. Chem. Eng. Data. 34(4), 375-382. DOI: 10.1021/je00058a002.
- 11. Rajendran, M., Renganarayanan, S. & Srinivasan, D. (1991). Salt effect in phase equilibria and heat of mixing: effect of dissolved inorganic salts on the liquid-liquid equilibria of ethyl acetate - 2-propanol - water system and the vapour liquid equilibria and heat of mixing of its constituent binaries. Fluid phase Equilib. 70(1), 65-106. DOI: 10.1016/0378-3812(91)85005-F.
- 12. Rajendran, M. & Srinivasan, D. (1994). Salt effect in heat of mixing: effect of dissolved salts on enthalpy of mixing of 2-propanol-benzene system. Chem. Eng. Commun. 128(1), 109-117. DOI: 10.1080/00986449408936238.
- 13. Kumar, M. D. & Rajendran, M. (1999). Salt effect on enthalpy of mixing of water + methanol at 303.15 K. Fluid Phase Equilib. 164(2), 217-224. DOI: 10.1016/S0378-3812(99)00233-2.
- 14. Tamilarasan, R., Prabu, A.A, Kumar, M. D. & Yoo, C. K. (2008). Salt effect on the enthalpy of mixing of 1,4-dioxane + formic acid at 303.15 K. J. Chem. Eng. Data. 53(4), 966-969. DOI: 10.1021/je7007022.
- 15. Tamilarasan, R., Prabu, A. A., Raajenthiren, M., Kumar, M. D. & Yoo, C. K. (2009). Effect of dissolved salts on the enthalpy of mixing of methanol + formic acid system at 303.15 K. J. Chem. Eng. Data. 54(1), 4-7. DOI: 10.1021/je800568m.
- 16. Tamilarasan, R., Prabu, A. A., Raajenthiren, M., Kumar, M. D. & Yoo, C. K. (2009). J. Chem. Eng. Jpn. 42(7), 485-489. DOI: 10.1252/jcej.09we053.
- 17. Timmermanns, J. (1959). The Physico-chemical constants of binary systems in concentrated solutions. New York, U. S. A.: Wiley-Interscience Publishers.
- 18. Battler, J. R. & Rowley, R. L. (1985). Excess enthalpies between 293 K and 323 K for constituent binaries of ternary mixtures exhibiting partial miscibility. J. Chem. Thermodyn. 17(8), 719-732. DOI: 10.1016/0021-9614(85)90101-6.
- 19. Redlich, O.; Kister, A. T. (1948) Algebraic representation of thermodynamic properties and classification of solutions. Ind. Eng. Chem. 40, 345-348.
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Bibliografia
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