Effect of LiCl, NaCl and KCl on aqueous phenylalanine at 303 K

Abstract

Density, speed of sound and viscosity data for 2-amino 3-phenyl propanoic acid commonly known as phenylalanine in aqueous sodium chloride (NaCl), potassium chloride (KCl) and lithium chloride (LiCl) have been measured in the concentration range 0.00-0.10 mol.kg^-1 at 303 K. From these data, adiabatic compressibility (<img src='http://www.niscair.res.in/jinfo/Beta.gif' border=0>), change (<img src='/image/spc_char/delta.gif' border=0><img src='http://www.niscair.res.in/jinfo/Beta.gif' border=0>), relative change in adiabatic compressibility (<img src='/image/spc_char/delta.gif' border=0><img src='http://www.niscair.res.in/jinfo/Beta.gif' border=0>/<img src='http://www.niscair.res.in/jinfo/Beta.gif' border=0>₀), acoustic impedance (<i>Z</i>), limiting apparent molar compressibility (<img src='/image/spc_char/phi.gif' border=0>_k), limiting apparent molar volume (<img src='/image/spc_char/phi.gif' border=0>_v) and their constants <i>S</i>_k and <i>S</i>_v have been computed. The observed variation of these parameters helps in understanding the nature of solute-solvent interactions present in the system. The structure-breaking capacity of phenylalanine has been inferred from aqueous electrolytes using Jones-Dole equation.