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The mixing effect of glycine with sodium chloride from activity coefficients investigations at T = (303.15 and 313.15) K

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Florinela SIRBU and Olga IULIAN

Editorial: Journal of Optoelectronics and Advanced Materials , 12, p.1200–1205, 2010.


The mixing effect of electrolyte and aminoacid on activity coefficients in NaCl+Glycine+Water mixtures, for molality of glycine and NaCl up to 2 mol kg-1 was investigated. The activity coefficients at (303.15 and 313.15) K of NaCl and glycine in aqueous solutions were measured using potentiometric method. The obtained experimental data were fitted by Scatchard-Prentiss and Roberts-Kirkwood equations. The mean ionic activity coefficient of NaCl decreases as the molality of glycine in the solution increases. The presences of NaCl diminish the activity coefficient of glycine giving a salt-in effect for amino acid

Cuvinte cheie: efect de efect de amestecare, NaCl+Glicina+Apa // mixing effect, NaCl+Glycine+Water