<span style="font-size:10.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-US">Volumetric, viscometric, acoustic and refractometric studies of molecular interactions in certain binary systems of <i style="mso-bidi-font-style:normal">o</i>-chlorophenol at 303.15 K</span>

Abstract

This paper describes the results of our experimental study on four binary systems containing <i style="mso-bidi-font-style: normal">o</i>-chlorophenol (OCP) as the common component and the second component is, cinnamaldehyde orbenzaldehyde or <i style="mso-bidi-font-style: normal">N,N</i>-dimethylacetamide or <i style="mso-bidi-font-style:normal">n</i>-hexane. The measured speed of sound (<i style="mso-bidi-font-style:normal">u</i>), density (<img src='http://www.niscair.res.in/jinfo/rho.gif' border=0>), viscosity (<img src='/image/spc_char/Etta.gif' border=0>) and refractive index (<img src='/image/spc_char/micro.gif' border=0>) and the computed acoustical parameters at 303.15 K and at atmospheric pressure, identify strong molecular interactions through hydrogen bonding in aldehyde and amide systems with OCP while weak interaction in <i style="mso-bidi-font-style:normal">n</i>-hexane system. The influence of structure of components on the existing interactions has also been revealed by the behaviour of volumetric parameters. The sign and magnitude of excess parameters clearly indicate the presence of specific interactions among the components. The excess parameters were fitted to polynomial type Redlich-Kister (RK) equation and the coefficients of the fitting were found to support the present investigation. The validity of various theoretical models applied to the present systems has been studied through the calculated values of absolute average percentage deviation (AAPD).

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