Open AccessConcentration-dependent diffusion of lithium, sodium, potassium, and cesium hydroxides in water
Author(s) -
А. И. Мизев,
Andrey Shmyrov,
Elena Mosheva
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1809/1/012011
Subject(s) - potassium , diffusion , potassium hydroxide , lithium (medication) , chemistry , caesium , sodium , nitric acid , aqueous solution , sodium hydroxide , lithium hydroxide , analytical chemistry (journal) , alkali metal , lithium nitrate , inorganic chemistry , chromatography , thermodynamics , ion , ion exchange , ionic bonding , medicine , physics , organic chemistry , endocrinology
The diffusion coefficients of aqueous solutions of lithium, sodium, potassium, and cesium hydroxide in a concentration range of 0 to 3.0 mol/L were obtained at 25 °C and normal pressure. The Fizeau interferometer and the spatial phase-shifting method were used to measure the spatial distribution of concentration of the investigated substances. The concentration dependence of the diffusion coefficient was determined from the Matano-Boltzmann analysis. The experimental setup and techniques, as well as the image and data processing procedure, were tested using an aqueous solution of nitric acid. The comparison made for lithium, sodium, and potassium hydroxides indicated good agreement between the obtained results and the data collected from the literature. The concentration dependence of the diffusion coefficient for cesium hydroxide in water was found experimentally for the first time.