Use of the Bronsted equation in the interpretation of micellar effects in kinetics (II). Study of the reaction [Fe(CN)(5)(4-CNpy)](3-)+CN-reversible arrow Fe(CN)(6)(4-)+4-CNpy in CTACl micellar solutions

A study of the reaction [Fe(CN)(5)(4-CNpy)](3-) + CN- reversible arrow Fe(C N)(6)(4-) + 4-CNpy was carried out in hexadecyltrimethylammonium chloride ( CTACl) micellar solutions. We conclude that the well-known pseudophase mode l, an extension of the Olson-Simonson treatment to micellar solutions, is e quivalent to the Bronsted equation in regard to the interpretation of the m icellar effects on reactivity. The equivalence follows from the fact that b oth pseudophase and Bronsted approaches can be used to rationalize kinetic data, as well as from thermodynamic considerations.