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Studies on Thermo acoustic Parameters in binary liquid mixtures of MIBK with 1-Propanol, 1-Butanol and 1-Pentanol at 303.15K-A new approach by Direct Measurement of Acoustic Impedance

Author Affiliations

  • 1Acoustics and Ultrasonic Standard, NPL (CSIR) New Delhi-12, INDIA
  • 2C.C.S. University, Meerut, U.P., INDIA

Res.J.chem.sci., Volume 1, Issue (5), Pages 6-13, August,18 (2011)

Abstract

Acoustic Impedance and Ultrasonic Velocities of binary liquid mixtures Methyl Iso Butyl Ketone (MIBK) with 1-Propanol, 1-Butanol and 1- Pentanol have been measured over the wide mixture compositions at T = 303.15 K. Acoustic Impedance (Z) has directly been measured by using a new technique based on pulse echo reflectory method, while ultrasonic velocity has been measured by t method. These data have been used to compute densities, Intermolecular free length(L), molar volumes(V), excess intermolecular free length(L), isentropic compressibility(K), excess acoustic impedance(Z), excess molar volumes(V), excess isentropic compressibility (K). The values of L, V , K are negative over the wide range of composition for all the studied binary mixtures, while the values of ZE are found positive. The changes in the thermo acoustic parameters as a function of variations in the composition and chain length of alkyl groups in alkanol molecules are discussed in terms of the intermolecular interactions.

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