Effect of dipotassium hydrogen phosphate on thermodynamic properties of glycine and l-alanine in aqueous solutions at different temperatures |
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| Institution: | 1. Department of Physics, & Centre for Theoretical Studies, IIT Kharagpur, Pin: 721302, India;2. National Centre For Radio Astrophysics, Post Bag 3, Ganeshkhind, Pune 411007, India;3. Department of Physics, Indian Institute of Science, Bangalore 560012, India;4. Department of Physics and Meteorology & Centre for Theoretical Studies, IIT Kharagpur, 721302 India;5. Department of Physics, Jadavpur University, Kolkata 700032, India;6. Dept of Physics and Astronomy, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa;7. SKA SA, The Park, Park Road, Pinelands 7405, South Africa;8. Department of Physics, IIT (BHU), Varanasi 221005, India |
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| Abstract: | Densities, ρ, speed of sound, u for glycine, l-alanine have been measured in aqueous solutions of dipotassium hydrogen phosphate (DKHP) ranging from 0.2, 0.4, 0.6 and 0.8 mol·kg−1 at temperatures T = (288.15, 298.15, 308.15 and 318.15) K. The different parameters such as apparent molar volume, limiting apparent molar volume, transfer volume, partial molar expansibility have been derived from density data. Experimental speeds of sound data were used to estimate apparent molar adiabatic compressibility, limiting apparent molar adiabatic compressibility, transfer parameter and hydration number. These parameters have been discussed in the light of ion-ion and ion-solvent interactions. |
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