Abstract
Using 2.5-dinitrophenol as an optical indicator, the pKa of cacodylic acid were spectrophotometrically determined at elevated temperatures under saturation vapor pressures. The result is pKa = -26.41 + 1296/T + 4.973 InT whereT is in Kelvin. In a similar way, the pKa ofp-nitrophenol were obtained up to 200‡C giving pKa = -24.82 + 2135/T + 4.353 InT From these results, several thermodynamic functions of cacodylic acid andp- nitrophenol were calculated.
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References
W. L. Marshall,Pure Appl. Chem. 57, 283 (1985).
J. R. Fisher and H. L. Barnes,J. Phys. Chem. 76, 90 (1972).
A. J. Ellis,J. Chem. Soc. 2299 (1963).
A. S. Quist and W. L. Marashall,J. Phys. Chem. 72, 3122 (1968).
R. G. Bates and G. D. Pinching,J. Am. Chem. Soc. 72, 1393 (1950).
C. W. Davies, H. W. Jones, and C. B. Monk,Trans. Faraday Soc. 48, 921 (1952).
M. H. Lietzke, R. W. Stoughton, and T. F. Young,J. Am. Chem. Soc. 65, 2247 (1961).
W. L. Marshall and E. V. Jones,J. Phys. Chem. 70, 4028 (1966).
D. D. Macdonald, P. R. Wentreek, and A. C. Scott,J. Electrochem. Soc. 127, 1745 (1980).
M. J. Danielson, O. H. Koski, and J. Myers,J. Electrochem. Soc. 132, 2037 (1985).
S. Hettiarachchi, P. Kedzierzawski, and D. D. Macdonald,J. Electrochem. Soc. 132, 1866 (1985).
D. D. Macdonald, S. Hettiarachchi, H. Song, K. Makela, R. Emerson, and M. Ben-Haim,J. Solution Chem. 21, 849 (1992).
Y. Huh, J.-G. Lee, K. C. Mcphail, and K. Kim,J. Solution Chem.,22, 651 (1993).
I.-J. Lee, G.-S. Kang, and K. Kim,J. Solution Chem. 23, 1283 (1994).
H. C. Helgeson and D. H. Kirkham,Am. J. Sci. 274, 1199 (1974).
C. Morton,J. Chem. Soc. 1401 (1928).
M. L. Kirkpatrick,J. Am. Chem. Soc. 71, 2607 (1949).
Handbook of Chemistry and Physics, 70th edn., (CRC press, Boca Raton 1979).
D. Wauchope,J. Agric. Food Chem. 24, 717 (1976).
C. M. Judson and M. Kilpatrick,J. Am. Chem. Soc. 71, 3110 (1949) and references therein.
R. G. Bates and G. Schwarzenbach,Helv. Chim. Acta 37, 1069 (1954).
G. F. Allen, R. A. Robinson, and V. E. Bower,J. Phys. Chem. 66, 171 (1962).
S. E. Gillespie, J. L. Oscarson, X. Chen, R. M. Izatt, and C. Pando,J. Solution Chem. 21 761 (1992).
Y. Gu, C. H. Gammons, and M. S. Bloom,Geochim. Cosmochim. Acta 58, 3545 (1994).
W. L. Marshall and E. U. Franck,J. Phys. Chem. Ref. Data,10, 295 (1981).
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Shin, TW., Kim, K. & Lee, IJ. Spectrophotometric determination of the acid dissociation constants for cacodylic acid and p-Nitrophenol at elevated temperatures. J Solution Chem 26, 379–390 (1997). https://doi.org/10.1007/BF02767677
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DOI: https://doi.org/10.1007/BF02767677