Abstract

Sapna Tomar¹ and Padma Sikarwar²

DOI : http://dx.doi.org/10.13005/ojc/340614

Potentiometeric investigation on the complex formation equilibria involving Co(II), Ni(II), Cu(II) & Zn(II) with ethylenediaamine-N,N,N¹,N¹-tetraacetic acid and melonic acid have been made in solution at three different temps viz. (15⁰, 35⁰, 45⁰C). Important thermodynamic parameters namely, change in Gibb’s free energy (DG⁰), change in enthalpy (DH⁰) and change in entropy (DS⁰) and stability constant have been determined potentiometrically at ionic strength of 0.1 M (KNO₃).

Ethylenediaamine-N,N,N1,N1-Tetraacetic Acid; Formation Constant; Schiff Base Complexes; Transition Metals

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