Acta Chimica Slovaca (ACS) publishes papers on fundamental and applied aspects of chemistry, biochemistry, chemical technology, chemical engineering and process control, biotechnology and food technology. Welcome are also topics which include chemical aspects of materials, physical chemistry and chemical physics, analytical chemistry, macromolecular chemistry and biomedical engineering.

Mean Activity Coefficients of Peroxodisulfates in Saturated Solutions of the Conversion System 2NH4+ – 2Na+ – S2O82–  – SO42– – H2O at 20°C and 30°C

Jan Balej *

Heřmanova 35, 170 00 Prague 7, Czech Republic

E-mail: *

Abstract: Solubility data of the conversion system 2NH4+ – 2Na+ – S2O82– – SO42– – H2O at 20 °C and 30 °C for the partial pseudoternary systems Na2S2O8—(NH4)2SO4—H2O, (NH4)2S2O8—Na2SO4—H2O, Na2S2O8—NaNH4SO4—H2O and (NH4)2S2O8—NaNH4SO4—H2O have been correlated using the relative activity coefficient expansion of the crystallizing component. The obtained correlation equations have been used for the calculation of mean activity coefficients of ammonium and sodium peroxodisulfates in their saturated solutions of the mentioned pseudoternary systems.

Keywords: mean activity coefficient, ammonium peroxodisulfate, sodium peroxodisulfate, conversion system

Full paper in Portable Document Format: acs_0160.pdf

Acta Chimica Slovaca, Vol. 6, No. 2, 2013, pp. 163—167, DOI: 10.2478/acs-2013-0025