Volumetric and compressibility properties of aqueous solutions of urea and ethylene glycol

Abstract

<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">The volumetric and compressibility properties of urea and ethylene glycol are studied at 2^°, 4^o, 8° and 10^°C. The apparent molal volumes and apparent molal compressibilities have been calculated and analysed. Both the systems are seen to show opposite trends with respect to <span style="font-size: 12.0pt;font-family:Symbol;mso-fareast-font-family:" times="" new="" roman";mso-bidi-font-family:="" symbol;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:="" ar-sa"=""><span style="font-size:12.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:ar-sa"=""> ϕ<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN"><span style="font-size: 12.0pt;font-family:Symbol;mso-fareast-font-family:" times="" new="" roman";mso-bidi-font-family:="" symbol;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:="" ar-sa"="">_{<span style="font-size:12.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">v</span>}<span style="font-size: 12.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">, but their variation of <span style="font-size:12.0pt;font-family:Symbol; mso-fareast-font-family:" times="" new="" roman";mso-bidi-font-family:symbol;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"=""><span style="font-size:12.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:ar-sa"=""> ϕ<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN"><span style="font-size: 12.0pt;font-family:Symbol;mso-fareast-font-family:" times="" new="" roman";mso-bidi-font-family:="" symbol;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:="" ar-sa"=""><span style="font-size: 12.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN"><span style="font-size:12.0pt;font-family:Symbol; mso-fareast-font-family:" times="" new="" roman";mso-bidi-font-family:symbol;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">_{<span style="font-size:12.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-ansi-language:en-in;mso-fareast-language:en-in;="" mso-bidi-language:ar-sa"="" lang="EN-IN">k</span>}<span style="font-size:12.0pt; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN"> with concentration is found to be similar.<span style="font-size:12.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:ar-sa"=""> _{<span style="font-size:12.0pt; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN"></span>}</span></span></span></span></span></span></span></span></span></span></span></span></span></span>