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Spectrophotometric evaluationof stability constants of titanium,molybdenum,iron and aluminiumwith gallacetophenone phenylhydrazone

M.Mallikarjuna Reddy, B.Prathima, Y.Subba Rao, P.V.Chalapathi, D.Venkataramana Reddy


Stability constant ofmetal complexes of gallacetophenone phenylhydrazone (GPPH) are determined using spectrophotometricmethod. Stability constant of complexes are determined at 300C, bymaintaining the ionic strength constant using 0.1MNaNO3. The stoichiometry of the complexes is determined by JobÂ’s method. It has been verified thoroughly byAsmus method. For the metals, the order of stability constant is found to be Fe(II) > Ti (IV) >Mo (VI) >Al (III).The log k values of the complexes of Fe (II), Ti (IV),Mo (VI) andAl (III) are calculated to be 8.84, 8.44, 7.17 and 3.50 respectively by Asmus method.


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  • Université de Barcelone
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