Thermodynamic Quantities of Surface Formation of Aqueous Electrolyte Solutions I. Aqueous Solutions of NaCl, MgCl2, and LaCl3

Author： Matubayasi N.   Matsuo H.   Yamamoto K.   Yamaguchi S-i.   Matuzawa A.  

Publisher： Academic Press

ISSN： 0021-9797

Source： Journal of Colloid and Interface Science, Vol.209, Iss.2, 1999-01, pp. : 398-402

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

The surface tensions of aqueous solutions of sodium, magnesium, and lanthanum chlorides were measured as a function of concentration and temperature. By analyzing the results, the concentration dependence of the thermodynamic quantities of surface formation such as entropy (Δs), Helmholtz free energy (Δf), and energy of surface formation (Δu) were evaluated. The Δfincreased almost linearly with increasing concentration, and the degree of the increase is mainly determined by the net charges of the salts. The Δsdecreased with the addition of salt into the solution. It was found that the net charge of salts determines the degree of the decrease in Δs. On the other hand, a slight change in the Δuis observed because of the opposite contribution of ΔfandTΔsto the Δuvalue.

Related content

Thermodynamic Quantities of Surface Formation of Aqueous Electrolyte Solutions II. Mixed Aqueous Solutions of NaCl and MgCl2

By Matubayasi N.   Yamaguchi S-i.   Yamamoto K.   Matsuo H.  

Journal of Colloid and Interface Science, Vol. 209, Iss. 2, 1999-01 ,pp. : 403-407 (5)

Academic Press

Access to resources Recommend Favorite

Use of Pitzer's model to calculate thermodynamic properties of aqueous electrolyte solutions of Na 2 SO 4 +NaCl between 273.15 and 373.15 K

By Marliacy P.   Hubert N.   Schuffenecker L.   Solimando R.  

Fluid Phase Equilibria, Vol. 148, Iss. 1, 1998-07 ,pp. : 95-106 (12)

Elsevier

Access to resources Recommend Favorite

Thermodynamic Properties of Quaternary Aqueous Solutions of Chlorides Charge-type 1-1*1-1*2-1: NH4Cl + NaCl + YCl2 + H2O with Y ≡ Mg2+, Ca2+, and Ba2+

By El Guendouzi Mohamed   Azougen Rachid  

Journal of Solution Chemistry, Vol. 39, Iss. 5, 2010-05 ,pp. : 603-621 (19)

Springer Publishing Company

Access to resources Recommend Favorite

Thermodynamic Quantities of Surface Formation of Aqueous Electrolyte Solutions III. Aqueous Solutions of Alkali Metal Chloride

By Matubayasi N.   Yamamoto K.   Yamaguchi S-I.   Matsuo H.   Ikeda N.  

Journal of Colloid and Interface Science, Vol. 214, Iss. 1, 1999-06 ,pp. : 101-105 (5)

Academic Press

Access to resources Recommend Favorite

Thermodynamic Quantities of Surface Formation of Aqueous Electrolyte Solutions V. Aqueous Solutions of Aliphatic Amino Acids

By Matubayasi N.   Miyamoto H.   Namihira J.   Yano K.   Tanaka T.  

Journal of Colloid and Interface Science, Vol. 250, Iss. 2, 2002-06 ,pp. : 431-437 (7)

Academic Press

Access to resources Recommend Favorite