Thermodynamics of protolytic equilibrium of nicotinic acid in water-ethanol solutions

被引：0
|
作者：
N. N. Kuranova
S. V. Dushina
V. A. Sharnin
机构：
[1] Ivanovo State University of Chemical Technology,
来源：
Russian Journal of Physical Chemistry A | 2010年 / 84卷
关键词：
Nicotinate; Thermal Effect; Nicotinic Acid; Protonation Reaction Transfer; Protolytic Equilibrium;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The enthalpies of stepwise protonation of nicotinate ion (L−) in water-ethanol solvents were determined calorimetrically at 298.15 K. It was found that the reduced exothermicity of the reaction of nicotinate ion protonation upon an increase of the organic component content in solution is due mainly to increased solvation of the proton. The minor influence of solvent on the enthalpy of protonation of nicotinic acid (HL) is characterized by compensation from solvation of the proton, the ligand, and its protonated form (H2L+).
引用
收藏
页码：792 / 795
页数：3
相关论文
共 50 条
  • [1] Thermodynamics of protolytic equilibrium of nicotinic acid in water-ethanol solutions
    Kuranova, N. N.
    Dushina, S. V.
    Sharnin, V. A.
    RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2010, 84 (05) : 792 - 795
  • [2] Protolytic Equilibrium Constants of Nicotinic Acid Solutions in Water–Dimethylsulfoxide Mixtures
    N. N. Kuranova
    N. A. Chesnokova
    A. S. Gushchina
    K. V. Grazhdan
    V. A. Sharnin
    Russian Journal of Physical Chemistry A, 2020, 94 : 2030 - 2033
  • [3] Protolytic Equilibrium Constants of Nicotinic Acid Solutions in Water-Dimethylsulfoxide Mixtures
    Kuranova, N. N.
    Chesnokova, N. A.
    Gushchina, A. S.
    Grazhdan, K. V.
    Sharnin, V. A.
    RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2020, 94 (10) : 2030 - 2033
  • [4] Acid-base equilibrium in water-acetone and water-ethanol solutions of glycine
    Isaeva, VA
    Sharnin, VA
    Shormanov, VA
    Baranova, IA
    ZHURNAL FIZICHESKOI KHIMII, 1996, 70 (08): : 1421 - 1423
  • [5] Solvent effect of aqueous ethanol on complex formation and protolytic equilibria in nicotinic acid solutions
    N. N. Kuranova
    S. V. Dushina
    V. A. Sharnin
    Russian Journal of Inorganic Chemistry, 2008, 53 : 1943 - 1947
  • [6] PROTOLYTIC EQUILIBRIUM IN AQUEOUS-ORGANIC SOLUTIONS OF BENZOIC HYDRAZIDES AND NICOTINIC-ACID
    BYCHKOVA, TI
    BOOS, GA
    AKSENOVA, LF
    ZHURNAL FIZICHESKOI KHIMII, 1991, 65 (09): : 2412 - 2417
  • [7] Solvent Effect of Aqueous Ethanol on Complex Formation and Protolytic Equilibria in Nicotinic Acid Solutions
    Kuranova, N. N.
    Dushina, S. V.
    Sharnin, V. A.
    RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2008, 53 (12) : 1943 - 1947
  • [8] REACTION THERMODYNAMICS OF ACID DISSOCIATION OF AMMONIUM ATOM IN WATER-ETHANOL SOLVENTS
    NEVSKII, AV
    SHORMANOV, VA
    KRESTOV, GA
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA I KHIMICHESKAYA TEKHNOLOGIYA, 1984, 27 (02): : 155 - 158
  • [9] Chemical recycling of poly(lactic acid) by water-ethanol solutions
    Iniguez-Franco, Fabiola
    Auras, Rafael
    Dolan, Kirk
    Selke, Susan
    Holmes, Daniel
    Rubino, Maria
    Soto-Valdez, Herlinda
    POLYMER DEGRADATION AND STABILITY, 2018, 149 : 28 - 38
  • [10] THERMAL CAPACITY OF WATER-ETHANOL SOLUTIONS
    SHULGIN, AV
    PUCHKOV, LV
    ZHURNAL OBSHCHEI KHIMII, 1983, 53 (10): : 2181 - 2184
12345