Optical studies of the Soret effect. Part III. Entropies and heat capacities of transfer of norvaline, ε-aminocaproic acid,L-proline,DL-hydroxyproline, and glycylglycine in aqueous solution
Abstract:Soret coefficients for aqueous solutions of isoelectric norvaline, c-aminocaproic acid, L-proline, DL-hydroxyproline, and glycylglycine have been measured over concentration ranges from about 0.1 molal upwards, a t mean temperatures of 25 and 35". using the optical beam-displacement method described in Part I. Entropies and heat capacities of transfer have been calculated from the results. On the basis of the qualitative model discussed in Part II, we conclude that (i) a terminal NH,+ group is more efficient i… Show more
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