{"title":"Phase Equilibria in the Na+,K+//Cl–,NO $$_{3}^{ - }$$ –H2O System near Boiling Temperatures. II. Modeling a Reciprocal System","authors":"M. N. Mamontov, S. V. Kurdakova, I. A. Uspenskaya","doi":"10.1134/s0036024424701164","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The phase equilibria in the Na<sup>+</sup>,K<sup>+</sup>//Cl<sup>–</sup>,NO<span>\\(_{3}^{ - }\\)</span>–H<sub>2</sub>O reciprocal system in the temperature range 373–573 K were modeled using the set of parameters presented in communication I of this work. According to the results of calculations, this system has a stability region of the liquid, which boils without forming a third phase (precipitate). The change in the boiling temperature was traced for selected individual bulk compositions of the system during the gradual evaporation of water from it. In the experimental determination of the boiling points or activity of water for saturated solutions formed by the dissolution of salts with opposite cations and anions, one should take into account that the composition of such solutions will change with any changes in the total concentrations of the salts of the system if a salt other than the one used for mixing appears in the precipitate.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0036024424701164","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The phase equilibria in the Na+,K+//Cl–,NO\(_{3}^{ - }\)–H2O reciprocal system in the temperature range 373–573 K were modeled using the set of parameters presented in communication I of this work. According to the results of calculations, this system has a stability region of the liquid, which boils without forming a third phase (precipitate). The change in the boiling temperature was traced for selected individual bulk compositions of the system during the gradual evaporation of water from it. In the experimental determination of the boiling points or activity of water for saturated solutions formed by the dissolution of salts with opposite cations and anions, one should take into account that the composition of such solutions will change with any changes in the total concentrations of the salts of the system if a salt other than the one used for mixing appears in the precipitate.
AbstractThe phase equilibria in the Na+,K+//Cl-,NO\(_{3}^{ - }\)-H2O reciprocal system in the temperature range 373-573 K were modeled using the set of parameters presented in communication I of this work.根据计算结果，该体系有一个液体稳定区，沸腾时不会形成第三相（沉淀）。在从该体系中逐渐蒸发水分的过程中，对该体系中选定的个别块状成分的沸点温度变化进行了追踪。在通过实验测定阳离子和阴离子相反的盐类溶解形成的饱和溶液的沸点或水的活度时，应考虑到如果沉淀中出现的盐类不是用于混合的盐类，那么这种溶液的组成会随着体系中盐类总浓度的变化而变化。
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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