INTERACTIONS OF ALPHA-AMINO-N-BUTYRIC ACI D PLUS HCL PLUS NACL AT 298.15 K IN AQUEOUS-SOLUTION

E.m.f. values for the cell glass\HZ(+/-)(m(A)), HCl(m(B)), NaCl(m(C)), AgCl\Ag, where HZ(+/-) stands for the DL-alpha-amino-n-butyric acid, were measured at 298.15 K in the ionic strength range from 0.1 to 4 mo l kg(-1). From these data Fitter's parameter values for DL-alpha-amino -n-butyric hydrochloride were obtained together with the first acidity constant value (beta((0))+theta(NaH2Z) = 0.1539; beta((1)) = 0.221; C -phi = -0.0133 and pK(a1) = 2.295). Activity and osmotic coefficients for aqueous solutions of pure DL-alpha-amino-n-butyric hydrochloride a t several concentrations (up to 0.1 mol.kg(-1)) were calculated from t hese parameter values.