Abstract
Electromotive-force measurements of cells containing hydrochloric acid and ammonium chloride at constant total molality have been used to determine the variation of the logarithm of the activity coefficient of hydrochloric acid with change in the amount of ammonium chloride in the solution. The results are interpreted in the light of the recent work of Pitzer, and it is found that Harned's rule holds for both electrolytes.
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H. S. Harned and B. B. Owen,The Physical Chemistry of Electrolytic Solutions, 3rd ed. (Reinhold, New York, 1958), p. 602.
H. S. Harned and R. A. Robinson,Multicomponent Electrolyte Solutions (Pergamon, Oxford, 1968), p. 36.
H. A. C. McKay,Trans. Faraday Soc. 51, 903 (1955).
H. S. Harned,J. Phys. Chem. 63, 1299 (1959);64 112 (1960);67, 1739 (1963).
H. S. Harned and H. R. Copson,J. Am. Chem. Soc. 55, 2206 (1933).
H. S. Harned,J. Am. Chem. Soc. 57, 1865 (1935).
H. S. Harned and W. J. Hamer,J. Am. Chem. Soc. 55, 2194 (1933).
H. S. Harned and A. B. Gancy,J. Phys. Chem. 62, 627 (1958).
H. S. Harned and O. E. Schupp,J. Am. Chem. Soc. 52, 3892 (1930).
B. F. Wishaw and R. H. Stokes,Trans. Faraday Soc. 49, 27 (1953).
E. Güntelberg,Z. Physik. Chem. 123, 199 (1926).
A. K. Covington,J. Chem. Soc. 4906 (1965).
R. Gary, R. G. Bates, and R. A. Robinson,J. Phys. Chem. 68, 1186 (1964).
R. G. Bates (ed.),Nat. Bur. Std. (U.S.) Tech. Note, No. 271, 28 (1965).
R. G. Bates,Determination of pH, 2nd ed. (Wiley, New York, 1973), p. 331.
R. G. Bates,Determination of pH, 2nd ed. (Wiley, New York, 1973), p. 283.
H. S. Harned and R. W. Ehlers,J. Am. Chem. Soc. 55, 2179 (1933).
H. S. Harned and B. B. Owen,The Physical Chemistry of Electrolytic Solutions, 3rd ed. (Reinhold, New York, 1958), p. 716.
R. G. Bates and V. E. Bower,J. Res. Nat. Bur. Std. 53, 283 (1954).
R. G. Bates, E. A. Guggenheim, H. S. Harned, D. J. G. Ives, G. J. Janz, C. B. Monk, J. E. Prue, R. A. Robinson, R. H. Stokes, and W. F. K. Wynne-Jones,J. Chem. Phys. 25, 361 (1956);26, 222 (1957).
G. N. Lewis and M. Randall,Thermodynamics, revised edition by K. S. Pitzer and L. Brewer (McGraw-Hill, New York, 1961), p. 572.
K. S. Pitzer,J. Phys. Chem. 77, 268 (1973).
G. Scatchard,J. Am. Chem. Soc. 83, 2636 (1961).
P. J. Reilly and R. H. Wood,J. Phys. Chem. 73, 4292 (1969).
P. J. Reilly, R. H. Wood, and R. A. Robinson,J. Phys. Chem. 75, 1305 (1971).
K. S. Pitzer and G. Mayorga,J. Phys. Chem. 77, 2300 (1973).
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On leave 1971–1973 from Drury College, Springfield, Missouri.
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Robinson, R.A., Roy, R.N. & Bates, R.G. The system H2O−HCl−NH4Cl at 25°C: A study of Harned's rule. J Solution Chem 3, 837–845 (1974). https://doi.org/10.1007/BF00645689
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DOI: https://doi.org/10.1007/BF00645689