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DOI Prefix 10.20431 |
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International Journal of Advanced Research in Chemical Science
Volume-2 Issue-2, 2015, Page No:28-34
Excess Free Volumes, Internal Pressures and Molar Available Volumes in the Binary Liquid Mixtures of N-Methyl-2-Pyrrolidone at Different Temperatures
D. Bala Karuna Kumara, Y.Hanumantha Raoa,P.B. Sandhyasrib,C.Rambabu**
a.Department of Chemistry, Andhra Loyola College, Vijayawada, Andhra Pradesh, India
b.Department of Physics, K.B.N College, Vijayawada, Andhra Pradesh, India- 520 008
c.Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, A.P, India
b.Department of Physics, K.B.N College, Vijayawada, Andhra Pradesh, India- 520 008
c.Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, A.P, India
Citation : D. Bala Karuna Kumar,Y.Hanumantha Rao,P.B. Sandhyasri,C. Rambabu, Excess Free Volumes, Internal Pressures and Molar Available Volumes in the Binary Liquid Mixtures of N-Methyl-2-Pyrrolidone at Different Temperatures International Journal of Advanced Research in Chemical Science. 2015;2(2):28-34.
Abstract
Available volume, molar free volume, internal pressure and their excess values are determined from the measured data of ultrasonic speeds, densities and viscosities of binary fluid mixtures of N-methyl-2-pyrrolidone (NMP) and Propyl amine (PA) or Butylamine (BA) or Dipropylamine (DPA) at different temperatures with an interval of 5 K from 303.15 to 318.15 K. Excess properties are fitted to a Redlich–Kister type equation. The excess available volume and excess molar free volumes are found to be negative where as the excess internal pressures are found to be positive. The results observed from these studies suggest dipole-dipole and Hydrogen-bonded interactions between unlike molecules in all the three systems investigated.
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