Abstract

The heats of interaction between alanyl-phenylalanine and solutions of nitric acid and potassium hydroxide at 288.15 and 308.15 K and solution ionic strengths of 0.5, 0.75, and 1.0 are determined via calorimetry with KNO₃. Standard thermodynamic characteristics (Δ_rH°, Δ_rG°, Δ_rS°, \(\Delta C_{p}^{^\circ }\)) of the reactions of acid–base interaction in aqueous solutions of alanyl-phenylalanine. The effect temperature has on the heats of dissociation of alanyl-phenylalanine is considered along with the relationship between the thermodynamic characteristics of the dissociation of the dipeptide and the structure of this compound.

中文翻译：

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温度对丙氨酰-苯丙氨酸在水溶液中逐步解离热力学的影响

摘要

丙氨酰-苯丙氨酸与硝酸和氢氧化钾溶液在 288.15 和 308.15 K 以及溶液离子强度为 0.5、0.75 和 1.0 之间的相互作用热是通过使用 KNO 3 的量热法测定_的。丙氨酰-水溶液中酸碱相互作用反应的标准热力学特性（ΔrH °、_ΔrG ° _、ΔrS ° _、 \ (\Delta C_{p}^{^\circ}\)）苯丙氨酸。考虑了温度对丙氨酰苯丙氨酸解离热的影响以及二肽解离的热力学特性与该化合物结构之间的关系。