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Title: Kinetic studies on the solvent extraction of iron(m) from aqueous solution with I-phenyl- 3-methyl-4- (p-nitrobenzoyl)pyrazol- 5-one dissolved in chloroform: Rate of forward extraction
Authors: Ogwuegbu, M O C
Oforka, N C
Spiff, A I
Issue Date: Dec-1992
Publisher: NISCAIR-CSIR, India
Abstract: The rate of forward extraction of iron(III) from aqueous solution using 1-phenyl- 3-methyl-4-(p-nitrobenzoyl)pyrazol-5-one, HNP in chloroform has been investigated at various conditions. Experimental observation shows that the rate of forward extraction is first order each with respect to [Fe(III)] and [HNP]org, and inverse first order with respect to [H+]. The rate of forward extraction of Fe(III) is proposed to be controlled by the formation of the first complex between Fe(H2O) or Fe(H2O)5OH2+ and the extractant anion, NP-. The rate constant, Kf for the forward extraction and the extraction equilibrium constant, Kex have been determined respectively as 5.83 x 102s-1 and 0.18.
Page(s): 981-983
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.31A(12) [December 1992]

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