The thermodynamic characteristics of the reaction between vanadium(5) and hydrogen peroxide in concentrated solutions of perchloric acid
- 1. Ivanovskij Gosudarstvennyj Khimiko-Tekhnologicheskij Univ., Ivanovo (Russian Federation)
Description
Stability constants of vanadium(5) complex with hydrogen peroxide and enthalpy of vanadium(5) complexing with hydrogen peroxide are determined at acidity of solution c(H+) = 5.00 mol/l, temperature T = 298.15 K and values of ionic force: I = 5, 6 and 7. Standard thermodynamic characteristics of vanadium(5) peroxide complex formation were calculated. At zeroth ionic force the value of complexing enthalpy ΔrH298.15 deg is equal to -48.59 ± 0.33 kJ/mol, standard enthalpy of peroxide vanadium(5) complex formation ΔfH298.15 deg is equal to -895.49 ± 1.51 kJ/mol; ΔrG298.15 deg = -36.51 kJ/mol, ΔrS298.15 deg -40.51 J/(mol K). As it is shown by calculations, standard change in entropy of the reaction has a minus sign, that is unique to complexation with neutral ligand
Abstract (Russian)
Определены константы устойчивости комплекса ванадия(5) с пероксидом водорода и энтальпия реакции комплексообразования ванадия(5) с пероксидом водорода при кислотности раствора c(H+) = 5.00 моль/л, температуре T 298.15 K и значениях ионной силы: I = 5, 6 и 7. Рассчитаны стандартные термодинамические характеристики образования пероксидного комплекса ванадия(5). При нулевой ионной силе значение энтальпии комплексообразования ΔrH298.15 град = -48.59 ± 0.33 кДж/моль, стандартная энтальпия образования пероксидного комплекса ванадия(5) ΔfH298.15 град = -895.49 ± 1.51 кДж/моль; ΔrG298.15 град = -36.51 кДж/моль, ΔrS298.15 град -40.51 Дж/(моль К). Как показали расчеты, стандартное изменение энтропии реакции имеет отрицательный знак, что свойственно реакциям комплексообразования с нейтральным лигандомAdditional details
Additional titles
- Original title (Russian)
- Термодинамические характеристики реакции ванадия(5) с пероксидом водорода в концентрированных растворах хлорной кислоты
Publishing Information
- Journal Title
- Zhurnal Fizicheskoj Khimii
- Journal Volume
- 75
- Journal Issue
- 4
- Journal Page Range
- p. 608-611
- ISSN
- 0044-4537
- CODEN
- ZFKHA9
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 33022173
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CHEMICAL COMPOSITION; ELECTRIC FIELDS; ENTHALPY; ENTROPY; HYDROGEN PEROXIDE; IONS; PERCHLORIC ACID; PH VALUE; STABILITY; TEMPERATURE RANGE 0273-0400 K; VANADIUM COMPLEXES
- Descriptors DEC
- CHARGED PARTICLES; CHLORINE COMPOUNDS; COMPLEXES; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PEROXIDES; PHYSICAL PROPERTIES; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPLEXES
Optional Information
- Notes
- 10 refs., 6 figs., 3 tabs.