ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The parachor in electrolyte solutions. A study to apply Hammick-Andrew's equation for the determination of the parachor of inorganic salts in water solutions

M. Liška

Slovak Academy of Sciences, Bratislava

Abstract: By the soln. method of Hammick and Andrew (CA 23, 3435) the parachor Px values of 18 inorg. salts (NaCl, NaBr, NaI, NaNO₃, Na₂SO₄, Na₂CO₃, KCl, KBr, KI, KNO₃, K₂SO₄, K₂CO₃, NH₄Cl, NH₄NO₃, (NH₄)₂SO₄, CaCl₂, MgCl₂, and BaCl₂) in sq. solns. at various concns. were detd. The Px values depend on the concn. of solns., but the dependence is not linear and it does not permit extrapolation of the parachor values to the zero concn. of the soln. In the calcn., the applied parachor value of the solvent affects considerably the Px value, as well as the dependence of Px on the compn. of the soln. Because of the dependence of the parachor of water on temp., the parachor values of salts detd. from sq. solns. also depend on temp. Analysis of the Hammick-Andrew equation showed that the equation is not established for the relation between the surface tension of the soln., solvent, and the dissolved substance and it should not be applied to sq. solns. of inorg. salts.

Full paper in Portable Document Format: 1611a784.pdf (in Slovak)

Chemical Papers 16 (11) 784–793 (1962)