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Abstract <p>Specific heat capacities are measured via calorimetry at 298.15 K (<i>c</i><sub><i>p</i></sub>) for solutions of ammonium iodide in a mixed <i>N</i>-methylpyrrolidone (MP)–water solvent throughout the range of compositions. The effect the composition of the mixed solvent has on the heat capacity of three-component NH<sub>4</sub>I–MP–H<sub>2</sub>O systems is analyzed. Standard values of partial molar heat capacities <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11504_2025_6034_Article_IEq1.gif" Format="GIF" Height="24" Rendition="HTML" Resolution="72" Type="Linedraw" Width="27" /> </InlineMediaObject> <EquationSource Format="TEX">\({{\overline {C_{p}^{0}} }_{2}}\)</EquationSource> <!--PhysChA2470258Novikov-m1--> </InlineEquation> are calculated for NH<sub>4</sub>I in a mixed MP–water solvent at 298.15 K.</p>

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Concentration Dependences of the Heat Capacity of Ammonium Iodide Solutions in Mixed N-Methylpyrrolidone–Water Solvent at 298.15 K

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • A. N. Novikov,
  • E. I. Kostyleva,
  • V. P. Bondarev,
  • V. A. Vasiliev

摘要

Abstract

Specific heat capacities are measured via calorimetry at 298.15 K (cp) for solutions of ammonium iodide in a mixed N-methylpyrrolidone (MP)–water solvent throughout the range of compositions. The effect the composition of the mixed solvent has on the heat capacity of three-component NH4I–MP–H2O systems is analyzed. Standard values of partial molar heat capacities \({{\overline {C_{p}^{0}} }_{2}}\) are calculated for NH4I in a mixed MP–water solvent at 298.15 K.