Ultrasonic and Interaction Studies of Amino Acids in Aqueous Electrolytes Cu (II) Nitrate and Ni (II) Chloride Solutions at 308° K

Densities and Ultrasonic velocities of L-Proline and L-glutamine (0.03 -0.20M) in aqueous Cu(II) nitrate and Ni(II) Chloride (0.06 & 0.10M) solutions have been determined experimentally at 308 K. The results are discussed in terms of dehydration effect of the electralytes on amino acids with the help of adiabatic compressibility K_s, hydration number H_n, apparent molar adiabatic compressibility, φK_s, and partial molar adiabatic compressibility, φ ^oK_s at infinite dilution. The results are discussed in terms of the dehydration effect of the electrolytes upon the amino acids. The properties of these amino acids in water and water+ electrolytes solution systems are discussed in terms of the charge, size and hydrogen bonding effect.