<span style="font-size:12.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-ansi-language: EN-IN;mso-fareast-language:EN-IN;mso-bidi-language:AR-SA" lang="EN-IN">Determination of equilibrium constant of <span style="mso-bidi-font-style:italic">Γ/C₂O₄^2-uni-bivalent ion exchange system using strongly basic anion exchanger Amberlite, IRA-400</span></span>

Abstract

Equilibrium constant of the uni-bivalent system <span style="mso-bidi-font-style:italic">Γ/C₂O₄^2-<i> </i>has been determined using Amberlite IRA-400 resin at seven different concentrations of oxalate from 0.010 - 0.050 <i>M. </i>The apparent equilibrium constants <i>(K</i>_{<span style="mso-bidi-font-style:italic">app</span>}<i>) </i>for the system, the ratio of the activity coefficients of ions in the resin phase, and hence the standard equilibrium constant <i>(K</i>_{<span style="mso-bidi-font-style:italic">std</span>}<i>) </i>have been evaluated. The value of <i>K</i>_{<span style="mso-bidi-font-style:italic">std</span>}<i> </i>increases from 0.260 at 30.0^oC to 0.355 at 45.0^oC indicating the endothermic ion exchange reaction. Enthalpy of the ion exchange reaction has been calculated to be 14.5 kJmol^-1.

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