title: Spectrophotometric study of the equilibria in aqueous copper(II) azide solutions.
abstract: The reaction between copper (II) and azide has been studied spectrophotometrically at four wavelengths, at 25 degrees , and ionic strength 4.00M (sodium perchlorate). The formation constants beta(2) and beta(3) found are 2.90 +/- 0.08 x 10(4) and 3.02 +/- 0.07 x 10(6) respectively. The results obtained from potentiometric measurements with a solid-state electrode disagree with those calculated from the spectrophotometric data. Causes of the discrepancy are discussed.
authors.affiliation: Instituto de Química, Universidade de São Paulo, São Paulo, C.P. 20780, Brazil.
authors.forename: E A
authors.initials: EA
authors.lastname: Neves
authors.forename: E
authors.initials: E
authors.lastname: de Oliveira
authors.forename: Z L
authors.initials: ZL
authors.lastname: Santos