Concentration dependences of the physicochemical properties of a water–acetone system
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- 作者：O. A. Fedyaeva ; E. G. Poshelyuzhnaya
- 关键词：water–acetone system ; associates ; deviation from Raoult’s law ; protolytic interactions
- 刊名：Russian Journal of Physical Chemistry A
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：91
- 期：1
- 页码：63-66
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Physical Chemistry;
- 出版者：Pleiades Publishing
- ISSN：1531-863X
- 卷排序：91
文摘
Concentration dependences of the UV spectrum, refractive index, specific electrical conductivity, boiling point, pH, surface tension, and heats of dissolution of a water–acetone system on the amount of acetone in the water are studied. It is found that the reversible protolytic interaction of the components occurs in all such solutions, resulting in the formation of hydroxyl and acetonium ions. It is shown that shifts of the equilibrium between the molecules and ions in the solution leads to extreme changes in their electrical properties. It is concluded that the formation of acetone solutions of water is accompanied by heat absorption, while the formation of aqueous solutions of acetone is accompanied by heat release.