Sinha Biswajit, Roy Pran Kumar, Roy Mahendra Nath
Acta Chim Slov. 2010 Sep;57(3):651-9.
Apparent molar volumes (φV) and viscosity B-coefficients for glycine in 0.005, 0.010, 0.015, and 0.020 mol dm-3 aqueous silver sulphate (Ag2SO4) solutions have been determined from solution density and viscosity measurements at (298.15, 308.15, and 318.15) K as a function of glycine concentration. The standard partial molar volume (φV0) and experimental slopes (SV*) obtained from the Masson equation have been interpreted in terms of solute-solvent and solute-solute interactions, respectively. The viscosity data were analyzed using the Jones-Dole equation, and the derived parameters A and B were interpreted in terms of solute-solute and solute-solvent interactions, respectively. The standard volumes of transfer (ΔφV0) and viscosity B-coefficients of transfer (ΔB) of glycine from water to aqueous Ag2SO4 solutions were derived to study various interactions in the ternary solutions. The structure making or breaking ability of glycine has been discussed in terms of the sign of (δ2φV0/δT2)P. The activation parameters of viscous flow for the ternary solutions were also calculated and explained in terms of transition state theory.
通过在(298.15、308.15和318.15)K温度下测量溶液密度和粘度,测定了甘氨酸在0.005、0.010、0.015和0.020 mol dm⁻³硫酸银(Ag₂SO₄)水溶液中的表观摩尔体积(φV)和粘度B系数,这些参数是甘氨酸浓度的函数。从马森方程得到的标准偏摩尔体积(φV₀)和实验斜率(SV*)分别从溶质 - 溶剂和溶质 - 溶质相互作用的角度进行了解释。使用琼斯 - 多尔方程分析粘度数据,导出的参数A和B分别从溶质 - 溶质和溶质 - 溶剂相互作用的角度进行了解释。推导了甘氨酸从水到硫酸银水溶液的标准转移体积(ΔφV₀)和转移粘度B系数(ΔB),以研究三元溶液中的各种相互作用。根据(δ²φV₀/δT²)P的符号讨论了甘氨酸的结构形成或破坏能力。还根据过渡态理论计算并解释了三元溶液粘性流动的活化参数。