Abstract

P. U. Singare¹*, R. S. Lokhande² and M. B. Nadar³

The selectivity behaviour of ion exchange resin Indion-102 in chloride form for inorganic anions like iodide and bromide ions was predicted on the basis of thermodynamic data. The equilibrium constant K calculated for uni-univalent ion exchange reaction systems were observed to decrease with rise in temperature indicating the endothermic ion exchange reactions having the enthalpy values 3.86 and 6.36 kJ /mol respectively. The low enthalpy and higher K values for iodide ion exchange reaction indicates more affinity of the resin for iodide ions as compared to that for bromide ions also in the solution.

Ion exchange equilibrium; Equilibrium constant; Enthalpy; Endothermic reactions; Anion exchange; Indion-102

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