Journal of Pure and Applied Ultrasonics

R. Palani ¹, S. Balakrishnan ²

Affiliations
1 Department of Physics, D.D.E, Annamalai University, Annamalainagar-608002, Tamil Nadu, IN
2 Department of Physics, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya, Enathur, Kanchipuram, Tamil Nadu, IN

Abstract

Apparent molal compressibilities (φ_K) and apparent molal volumes (φ_V), of L-serine, L-arginine and Lphenylalanine in aqueous sodium hydroxide solutions (0.0-0.10 mol kg^–1) at 303.15 K have been determined from precise density and ultrasonic velocity measurements. Limiting apparent molal compressibilities (φ_K^O), limiting apparent molal volumes (φ_V^O) and their constants (S_K,S_V) of these amino acids at infinite dilution were evaluated. Transfer adiabatic compressibilities (Δφ_K^O) and transfer volumes (Δφ_V^O) at infinite dilution from water to aqueous sodium hydroxide solutions have been calculated. These derived parameters have been interpreted in terms of ion-solvent and ion-ion interactions in the studied solutions.

Keywords

Ultrasonic Velocity, Apparent Molal Compressibility, Apparent Molal Volume and Transfer Volume.

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