Osmotic coefficients of 2:2-dithionates and of sodium dithionate and potassium persulphate

Abstract

Osmotic coefficients were determined by precise cryoscopic measurements on aqueous solutions of magnesium, calcium, barium and manganese(II) dithionates. In the analysis of the results, the alternative procedures of treating the salts as either completely or incompletely dissociated are both considered, and a comparison is made with the behaviour of the 2:2-sulphates. Results are also reported for sodium dithionate and potassium persulphate.