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<p>This research chiefly surveys the changes in the solubility and thermochemical behavior of DL-valine due to the existence of univalent electrolytes—namely, sodium bromide and potassium bromide—in an aqueous medium. The experiments were conducted in the temperature range from 288.15&#xa0;K to 323.15&#xa0;K using gravimetric analysis. Both bromides show salting-in effect which in turn implicates a large impact on the solubility of the investigated amino acid in the reaction medium. The values of the calculated thermodynamic parameters provide evidence towards the stability of the ions in the solution. The stability is mainly governed by the noncovalent processes, such as dissolution (and its stability) and short-range interactions (e.g., acid–base, solvent–solvent, and solute–solvent). This study provides insights into the molecular interactions and energetics that influence the solvation of the amino acid under diverse experimental conditions.</p> Graphical Abstract <p></p>

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Solvation and Related Thermochemical Behavior of DL-Valine in Aqueous Univalent Electrolytes for Temperatures from 288.15 K to 323.15 K

  • 期刊论文

  • 发表日期：

    2025年3月10日

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  • Simanta Kundu,
  • Jit Chakraborty,
  • Perwez Alam,
  • Avishek Saha,
  • Sintu Ganai,
  • Puspal Mukherjee,
  • Kalachand Mahali,
  • Sanjay Roy

摘要

This research chiefly surveys the changes in the solubility and thermochemical behavior of DL-valine due to the existence of univalent electrolytes—namely, sodium bromide and potassium bromide—in an aqueous medium. The experiments were conducted in the temperature range from 288.15 K to 323.15 K using gravimetric analysis. Both bromides show salting-in effect which in turn implicates a large impact on the solubility of the investigated amino acid in the reaction medium. The values of the calculated thermodynamic parameters provide evidence towards the stability of the ions in the solution. The stability is mainly governed by the noncovalent processes, such as dissolution (and its stability) and short-range interactions (e.g., acid–base, solvent–solvent, and solute–solvent). This study provides insights into the molecular interactions and energetics that influence the solvation of the amino acid under diverse experimental conditions.

Graphical Abstract