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    • A study of partial molar volumes of citric acid and tartaric acid in water and binary aqueous mixtures of ethanol at various temperatures

      M L Parmar R K Awasthi M K Guleria

      Volume 116 Issue 1 January 2004 pp 33-38

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/116/01/0033-0038

    • Keywords

       

      Partial molar volumes; citric acid; tartaric acid; water + ethanol mixture; structure breaker

    • Abstract

       

      Partial molar volumes of citric acid and tartaric acid have been determined in water and binary aqueous mixtures of ethanol (5, 10, 15, 20 and 25% by weight of ethanol) at different temperatures and acid concentrations from the solution density measurements. The data have been evaluated by using Masson equation and the obtained parameters have been interpreted in terms of solute-solvent interactions. The partial molar volumes vary with temperature as a power series of temperature. Structure making/breaking capacities of the organic acids have been inferred from the sign of$$[\partial ^2 \phi _V^0 /\partial T^2 ]_{p,} $$ i.e. second derivative of partial molar volume with respect to temperature at constant pressure. Both the organic acids behave as structure breakers in water and water + ethanol.

    • Author Affiliations

       

      M L Parmar1 R K Awasthi1 M K Guleria1

      1. Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla - 171005, India

    • Dates

       
      Published
      January 2004
      Manuscript received
      19 March 2003
      Manuscript revised
      17 June 2003

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