LAUSR

In this study, densities of binary and ternary solutions containing (glycine + water), (glycine + water + lithium bromide), (glycine + water + potassium bromide) and (glycine + water + sodium bromide) have been measured using a vibrating U-tube densimeter at T = (293.15 to 313.15) K. The apparent molar volumes have been calculated from the obtained density data. Apparent molar volumes at infinite dilution, $$ V_{\phi }^{0} $$Vϕ0, were fitted to a Redlich–Meyer type equation. The limiting apparent molar expansibility, $$ E_{\phi }^{0} $$Eϕ0, was calculated from the first derivative of the limiting apparent molar volumes with respect to temperature. By analyzing the obtained volumetric data, the hydration numbers for glycine, nH, were also calculated in these solutions. The results indicate that the apparent molar volumes increase with temperature. Moreover, it has been proven that glycine acts as a structure maker in the studied solutions.