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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(04) [April 2005] >
| Title: | Ultrasonic studies on dilute solutions of water in n-alcohols and 2-alkoxyethanols |
| Authors: | Ramana, G Venkata
Rajagopal, E
Murthy, N Manohara |
| Keywords: | Ultrasonic study
Water
n-alcohols
2-alkoxyethanols |
| Issue Date: | Apr-2005 |
| Publisher: | CSIR |
| IPC Code: | B01J19/10 |
| Abstract: | Ultrasonic velocities in dilute solutions of water in n-alcohols
(methanol, ethanol, n-propanol and n-butanol), and
2-alkoxyethanols (2-methoxyethanol, 2-ethoxyethanol and 2-butoxyethanol) have
been determined at 298.15 K using single crystal variable path interferometer
working at 3 MHz. The excess ultrasonic velocities have been evaluated using
the formula, which is thermodynamically valid. A distinctive non-linear
variation of ultrasonic velocity with concentration of water in both n-alcohols
and 2-alkoxyethanols has been observed over a small range of concentration. A
similar behaviour is also observed in the concentration dependence of excess
ultrasonic velocity in these solutions. This behaviour has been explained by
considering the existence of water molecules as monomers up to certain optimum
concentration, (X2)opt, of water and the
non-linear behaviour observed beyond (X2)opt has
been explained in the light of water-water and water-alcohol interactions
leading to the formation of islands of water-alcohol extended structures. |
| Page(s): | 259-264 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(04) [April 2005]
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