Determination of Dissociation Constants of Malonic Acid in (Ethylene Glycol-Water)X% Mixed Solvent at Different Temperatures Using Electromotive Force Measurements
DOI:
https://doi.org/10.25271/sjuoz.2019.7.1.573Keywords:
Electromotive force, Thermodynamic dissociation constant, Malonic acid, Ethylene glycol-water mixed solvent, thermodynamic quantityAbstract
The first and second dissociation constants of malonic acid in different composition of (ethylene glycol-water)%, (10, 20 and 30)% mixed solvent determined using the electromotive force measurements of galvanic cells without liquid junction at nine different temperatures, at interval, including the body temperature. The value of the first and second thermodynamic dissociation constants have been used to determine the thermodynamic quantities of two dissociation processes. These quantities involved the standard free energy, standard enthalpy change, standard entropy change, and standard heat capacity change.
References
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[33] S. S. Ahmed and L. A. Jamil, “Standard Potential of the Silver-Silver Chloride Electrode in X% Ethylene Glycol - Water Mixtures at Different Temperatures,” Int. Conf. Adv. Sci. Eng., pp. 403–408, 2018.
[2] F. A. Carey, Organic Chemistry. McGraw-Hill, Inc. America, 1880.
[3] T. D. Orlova, P. A. Romodanovskii, N. G. Dmitrieva, and S. N. Gridchin, “The Heat Effects of Malonic Acid Dissociation,” Russ. J. Phys. Chem. A., vol. 82, no. 4, pp. 681–683, 2008.
[4] J. Moreno and R. Peinado, “Carboxylic Acids, structure and properties, chapter 8,” in Enological Chemistry,” Elsevier, no. 5, pp. 109–120, 2012.
[5] T. Awad, G. Genidy, and G. A. Yahya, “Development of Novel Potentiometric Sensors for Determination of Lidocaine Hydrochloride in Pharmaceutical Preparations , Serum and Urine Samples,” Iran. J. Pharm. Res., vol. 16, pp. 498–512, 2017.
[6] P. Thakur, J. N. Mathur, R. C. Moore, and G. R. Choppin, “Thermodynamics and dissociation constants of carboxylic acids at high ionic strength and temperature,” Inorganica Chim. Acta, vol. 360, no. 12, pp. 3671–3680, 2007.
[7] K. Sue, F. Ouchi, K. Minami, and K. Arai, “Determination of Carboxylic Acid Dissociation Constants to 350 °C at 23 MPa by Potentiometric pH Measurements,” J. Chem. Eng. Data, vol. 49, no. 5, pp. 1359–1363, 2004.
[8] Z. Qiang and C. Adams, “Potentiometric determination of acid dissociation constants (pKa) for human and veterinary antibiotics,” Water Res., vol. 38, pp. 2874–2890, 2004.
[9] A. K. Kralj, “Calculating the Dissociation Constant of Weak Electrolytes by Measuring the Conductivity,” Int. J. Nonlinear Sci. Numer. Simulation., vol. 10, no. 7, pp. 965–975, 2009.
[10] M. L. Kilpatrick, “Errors in the determination of the dissociation constant of a weak acid by the extrapolation method errors in the determination of the dissociation constant of a weak acid by the extrapolation method,” J. Chem. Phys., vol. 8, pp. 306–313, 1940.
[11] D. D. Perrin, “Dissociation contants of inorganic acids and bases in aqueous solution,” Pure Appl. Chem., vol. 20, no. 2, pp. 133–219, 1969.
[12] S. M. Moazzem Hossen, M. M. Hossain, M. Enamul, and G. Akteruzzaman, “Spectrophotometric Method for Determination of Dissociation Constant of weak acid like 2, 4-Dinitrophenol in 1-Propanol-Water Mixtures at 24.5±0.5oC S.,” Der Pharma Chem., vol. 4, no. 4, pp. 1375–1384, 2012.
[13] L. E. Vidal Salgado and C. Vargas-Hernández, “Spectrophotometric Determination of the pKa , Isosbestic Point and Equation of Absorbance vs . pH for a Universal pH Indicator,” Am. J. Anal. Chem., vol. 5, pp. 1290–1301, 2014.
[14] K. P. Alter, J. L. Molloy, and E. D. Niemeyer, “Spectrophotometric Determination of the Dissociation Constant of an Acid – Base Indicator Using a Mathematical Deconvolution Technique,” J. Chem. Educ., vol. 82, no. 11, pp. 1682–1685, 2005.
[15] H. J. Ashby, H. B. Clarke, E. M. Crook, and S. P. Datta, “Thermodynamic quantities for the dissociation equilibria of biologically important compounds,” J. Biol. Chem., vol. 59, pp. 203–208, 1955.
[16] I. S. Majeed, “Dissociation constants of malonic acid in methyl urea + water mixture at different temperaturs”M.Sc. Thesis, University of Bagdad,” 1979.
[17] I. S. Majeed and J. M. Saleh, “Acidic dissociation constants of malonic acid in N-methyl urea + water mixtures from e.m.f. measurements,” Iraqi J. S., vol. 23, no. 3, 1982.
[18] M. K. Ridley, D. A. Plamer, D. J. and Wesolowski, and R. M. Kettler, “Cadimum Malonate complexation in aqueous sodium trifluoro methane sulfomate media to 75C,” J. Chem. S, vol. 27, no. 3, pp. 195–216, 2004.
[19] I. P. and Jaakko and K. C. Arthur, “Reviews Re-evaluation of the First and Second Stoichiometric Dissociation Constants of Solutions with or without Potassium Chloride . 1 . Estimation of the Parameters for the Hu 1 ckel Model Activity Coefficient Equations for Calculation of the Second,” J. Chem. Eng. Data, vol. 51, pp. 777–784, 2006.
[20] Y. A. Fadeeva and L. P. Safonova, “Dissociation Constant of Acetic Acid in ( N , N-Dimethylformamide + Water ) Mixtures at the Temperature 298 . 15 K,” J Solut. Chem, vol. 40, pp. 980–988, 2011.
[21] P. Y. Tishchenko, C. S. Wong, and W. K. Johnson, “Measurements of Dissociation Constants of Carbonic Acid in Synthetic Seawater by Means of a Cell Without,” J Solut. Chem, vol. 42, pp. 2168–2186, 2013.
[22] R. N. Roy et al., “Acid Dissociation Constants and Related Thermodynamic Functions of Protonated Nitrilotriethanol ( BIS-TRIS ) from ( 278 . 15 to 328 . 15 ) K,” J. Biophys. Chem., vol. 5, pp. 118–124, 2014.
[23] R. N. Roy et al., “Thermodynamics of the Second Stage Dissociation Step ( p K 2 ) of Buffer Monosodium 1,4-Piperazinediethanesulfonate from (278.15 to 328.15) K,” J. Biophys. Chem., vol. 5, pp. 91–98, 2014.
[24] E. N. Tsurko, “Thermodynamic Analysis of Dissociation Functions of Valine at 293.15–318.15 K in Ethanol–Water Mixtures,” J Solut. Chem., pp. 1313–1330, 2014.
[25] R. N. Roy et al., “Dissociation Constant of Acid Monosodium ( ADA ) from ( 278 . 15 to 328 . 15 ) K,” Journal of Physical Chemistry, no. 4, pp. 73–79, 2014.
[26] K. K. Kundu and M. N. Das, “Standard Potentials of Ag-AgCI and Ag-AgBr Electrodes in Ethylene Glycol and Propylene Glycol at 3OOC . and Related Thermodynamic Quantities,” J. Chem. Eng. Data, vol. 9, no. 1, pp. 9–11, 1964.
[27] “http://www.docbrown.info/page01/ExIndChem/electrochemistry02.htm.” .
[28] K. M. Shareef, “Association constants and transference numbers of some uni-univalent electrolytes in mixed solvents using electro chemical methods,” Ph. D. Thesis, University of Saddam, 1994.
[29] S. K. Lower, Electrochemistry, 2nd. editi. 1994.
[30] L. F. Grantham and D. S. Martin, “Kinetics of chloride exchange in aqueous chloride- tetrachloroplatinate ( II ) system,” Iowa, 1954.
[31] D. T. Sawyer, A. Sobkowiak, and A. Sobkowiak, Electrochemistry for Chemists, 2nd ed. 1995.
[32] A. K. Covington, C. M. A. Brett, M. F. Camoes, and R. Naumann, “Measurement of pH. definition, standards, and procedures,” Pure Appl. Chem, vol. 74, no. 11, pp. 2169–2200, 2002.
[33] S. S. Ahmed and L. A. Jamil, “Standard Potential of the Silver-Silver Chloride Electrode in X% Ethylene Glycol - Water Mixtures at Different Temperatures,” Int. Conf. Adv. Sci. Eng., pp. 403–408, 2018.
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Published
2019-03-30
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Ahmed, S. S., & Jamil, L. A. (2019). Determination of Dissociation Constants of Malonic Acid in (Ethylene Glycol-Water)X% Mixed Solvent at Different Temperatures Using Electromotive Force Measurements. Science Journal of University of Zakho, 7(1), 18–26. https://doi.org/10.25271/sjuoz.2019.7.1.573
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