Apparent molar volumes and adiabatic compressibilities of L-glycine in aqueous solutions of (CH3)4NI, NaBr and NaI at 298.15 K

Department of Chemistry, Kurukshetra University, Kurukshctra-136 119. India
E-mail : palchem@sify.com
Manuscript received 27 July 2004

The densities and sound speeds of L-glycine in aqueous (CH₃)₄Nl, NaBr and NaI are reported at 298.15 K. These data are
used to derive apparent molar volumes \(V_\phi\), and compressibilities \(K_{\phi,S}\)· Partial molar volumes \(V^0_\phi\) and partial molar adiabatic
compressibilities \(K^0_{\phi,S}\) of L-glycine at infinite dilution were evaluated. These v:Jlucs are required for calculating hydration
number n_H of L-glycine. Transfer volumes \(ΔV_\phi^0\) and transfer adiabatic compressibilities \(ΔK^0_{\phi,S}\) at infinite dilution from water
to aqueous electrolyte solutions have been calculated. Transfer parameters have been interpreted in terms of solutecosolute
interactions on the basis of a cosphere overlap model.