Research Journal of Recent Sciences ______ ______________________________ ______ ____ ___ ISSN 2277 - 2502 Vol. 2 ( ISC - 20 12 ), 32 - 34 (201 3 ) Res.J. Recent .Sci. International Science Congress Association 32 Short Communication The Study of ion - solvent Interaction of Eusol in Some Polar Solvent like Diethyl ether and Acetaldehyde Verma R.C. 1 , Raghav S. 2 , Chauhan N. 3 , Rouki 4 and Singh A.P. 5 1 - 5 Deptt.of Chemistry, Janta College, Bakewar, Etawah , UP, INDIA 2 Dep tt of Chemistry, K.K. College, Etahwah, UP, INDIA 3 Deptt of C hemistry, K.R. College, Mathura, UP, INDIA 4 Deptt of Chemistry, B.R.C.C.K.A. Girls College, Kagaraul, Agra, UP, INDIA Available online at: www.isca.in Received 1 7 th January 201 3 , revised 12 th April 201 3 , accepted 17 th April 201 3 Abstract Ion solvent interaction measurements of Eusol in diethylether and acetaldehyde have been carried out for the study of solute - solvent interaction. Various acoustic parameters ( intermolecular free length, isentropic compressibility, specific acoustic impedence, molar sound velocity, apparent molal adiabatic compressibility, relative association and solvation number) have been evaluated using ultrasound velocity data. The results were discussed in the light of solute - solvent interaction between the molecules. Keywords : Introduction Several techniques such as IR, Raman spectroscopy and Ultrasonics have been used for the determination of molecular and ion - solvent interaction 1 - 6 . Verma and Coworker has been studies the interactionin higher alcohols with thiophene, benzene, toluene, carbon tetra chloride 7 - 9 . The present work deals with the study of solute - solvent interaction in the solution of Eusol in diethylether and acetaldehy de using ultrasonic velocity data. The values of ultrasonic velocity, specific acoustic impdence, apparent molal adiabatic compresibility, relative association and solvation number increases while the isentropic compressibility, intermolecular free length and molar sound velocity decrease with increasing Eusol concentration. Material and Methods All the chemicals used in present study are of AR/BDH grade. A known amount of Eusol is dissolved in diethlether and acetaldehyde so as to obtain various concentr ation solutions. The ultrasonic velocity in these solutions was measured using a multifrequency ultasonic interferometer (F - 81 Mittal Enterprises, New Delhi) at a fixed frequency of 2 MHz and a constant temperature (30C 0.005C \ ). The densities of the solvent and solutions are measured using a specific gravity bottle. The various acoustic parameters viz. isentropic compressibility (  2 ), apparent molal adiabatic compressibility (  K ), specific acoustic impedance (z) 10 , molar sound velocity (R) 11 , relative association (R A ) 12 salvation number (S n ) 13 , viscosity(  ), intermolecular free length (L f ) 14 , and shear's relaxation time(  ) 15 have been evaluated by using the following empirical formula L f = K(  s ) Where [M = n 1 m 1 + n 2 m 2 / n 1 + n 2 ]  0 ,  ;  0 ,  ;  So ,  s are the ultrasonic velocity density and isentropic compressibility of the solvent and solution respectively, n 1 , n 2 and m 1 , m 2 are the number of moles and molecular weight of the solvent and solute respectively and K an d C are the temperature dependent Jacobson's constant and concentration respectively. Result and Discussion Ultrasonic velocity (  ) in the solution of Eusol in diethyl - ether and acetaldehyde increases with increasing concentration of Eusol. The variation of velocity with concentration (c) can be expressed by the following relationship. Research Journal of Recent Sciences ______ _ _ _______________________________ ______________ _ ________ ISSN 2277 - 2502 Vol. 2 ( ISC - 2012 ), 32 - 3 4 (201 3 ) Res.J.Recent.Sci International Science Congress Association 33 In general results show that while the density increase, the isentropic compressibility decreases with increasing concentration of solute and the qua ntity (d  s /dc) is positive while (d  /dc) is negative. Since the values of [1/  s (d  s /dc)] are larger than the values of [1/  (d  /dc)] for Eusol in diethyl - ether and acetaldehyde, the concentration derivative of velocity, (dv/dc) is positive i.e. the ultrasonic veloc ity increase with increasing the concentration of solute 16 - 18 . The isentropic compressibility (  s ) of Eusol solutions decreases with increase in the molar concentration of solute. The complimentary use of isentropic compressibility data can provide intere sting information on solute interaction. The results of isentropic compressibility have been explained in terms of Bachem's equation. 19 The variation of intermolecular free length with molar concentration of Eusol in diethylether a nd acetaldehyde is shown in f ig ure - 1 at 30C. It decreases with increasing molar concentration and the slope of lines is found to be negative. Linear decreases of L f has also been reported for oxalic acid dehydrate in tetra hydro furan by Ravi chandran et. al 20 . The variation of specific viscosity increases with increasing molar concentration of Eusol in diethyl - ether and acetadehyde is shown in f ig ure - 2 at 30C it increase with increasing molar concentration and the solope of lines is found to be negative. The result of  sp indicates that there is significant interaction between the solute and solvent molecules 21 - 22 . It is found that molal adiabatic compressibility has been negative increase with increasing molar concentration while molal adiabatic compressibility negati ve on increasing molar concentration shown in table 1 and 2. Table – 1 Eusol + Diethyl ether at Temp. 30 0 C Table – 2 Eusol + Acetaldehyde ether at Temp. 30 0 C Research Journal of Recent Sciences ______ _ _ _______________________________ ______________ _ ________ ISSN 2277 - 2502 Vol. 2 ( ISC - 2012 ), 32 - 3 4 (201 3 ) Res.J.Recent.Sci International Science Congress Association 34 Figure - 1 Specific Viscosity Vs Mole Conecentration Figure - 2 Intermolecular Free Length Vs M ole Concentration Reference 1. Srivastava T.N., Singh R.P. and Swaroop B., Indian J. Pure and Appl. Phys., 21, 67 (1983) 2. Lin W. and Tsay S.J., J. Phys. Chem. , 74, 1037 (1970) 3. Grunwald and Coburn, W.C., J. Am. Chem. Soc. , 1332 (1958) 4. Pimental G.C. and Maclellan A.L., The hydrogen bond (Freeman W.H. and Co. San Francisco) , 67 (1960) 5. 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