Electromotive force studies in aqueous solutions at elevated temperatures — XVII The thermodynamic properties of aqueous HClMgCl2CaCl2 mixtures

Abstract E.M.F. measurements of the cell Pt-H 2 ( p = 1)|HCl( m 2 ), MgCl 2 ( m 3 ), CaCl 2 ( m 4 |AgCl, Ag have been combined with isopiestic measurements of the system MgCl 2 CaCl 2 to calculate the activity coefficients of each of the electrolytes in aqueous HClMgCl 2 CaCl 2 mixtures.