Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/9637
Title: Effect of mixed electrolytes on the temperature of sound velocity maximum of water
Authors: Ramana, G Venkata
Rajagopal, E
Murthy, N Manohara
Keywords: Electrolytes
Sound velocity
Water
Issue Date: Nov-2004
Publisher: CSIR
Series/Report no.: G 01 N
Abstract: Effect of mixed electrolytes (KCl + KBr), (KCl + KI) and (KBr + KI) on the temperature of sound velocity maximum (TSVM) of water, T<sub>w</sub>, has been studied by determining the ultrasonic velocity with an accuracy of ± 0.003% using single crystal variable path interferometer working at 3 MHz. The velocity measurements were carried out at ; 2°C intervals over a range of 5°C on either side of TSVM of the solution. The accuracy in fixing TSVM is ± 0.2°C. The structural contribution to the shift in <i style="">T</i><sub>w</sub> of pure water due to the addition of mixed electrolytes, <img src='/image/spc_char/delta.gif' border=0><i style="">T</i><sub>str</sub>, has been found to be negative and increasing with concentration of mixed electrolytes. At any given concentration <img src='/image/spc_char/delta.gif' border=0><i style="">T</i><sub>str</sub> of (KCl + KBr) > (KCl + KI) > (KBr + KI). <img src='/image/spc_char/delta.gif' border=0><i style="">T</i><sub>str</sub> is also found to vary linearly with ionic strength of the mixed electrolyte solutions, and at any given ionic strength <img src='/image/spc_char/delta.gif' border=0><i style="">T</i><sub>str</sub> of (KCl + KBr) > (KCl + KI) > (KBr + KI). The results are explained in terms of enhancement in the structure breaking nature of Cl<sup>-</sup>, Br<sup>-</sup> and I<sup>-</sup> due to K<sup>+</sup> and is found to be in the order of I<sup>-</sup> > Br<sup>-</sup> > Cl<sup>-</sup>.
Description: 827-832
URI: http://hdl.handle.net/123456789/9637
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.42(11) [November 2004]

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