• Ultrasonic absorption studies in solutions of ortho and para hydroxy benzoic acid in dioxan

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    • Keywords


      Ultrasonic absorption; hydrogen bond; volume viscosity; relaxation time

    • Abstract


      Ultrasonic absorption was measured in ortho and para hydroxy benzoic acid (OHBA and PHBA) in dioxan at room temperature for various solute concentrations. The variation of ultrasonic absorption in both solutions with the solute concentration showed two maxima, one at lower solute concentration and the other at higher solute concentration. The first maximum is explained as due to formation of hydrogen bonds between the O-H groups of OHBA and PHBA molecules and the oxygen of dioxan molecules and the second maximum as due to the COOH group of the OHBA/PHBA molecules and oxygen of dioxan molecules. In both systems the measured absorption is explained on the basis of Hall’s two-state model.

    • Author Affiliations


      V Balasubramanian1 A Srinivasa Rao1 2

      1. Department of Physics, Bharathidasan Government College for Women, Pondicherry - 605 003, India
      2. Raman School of Physics, Pondicherry University, JIPMER Campus, Pondicherry - 605 006, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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