L'action de l'ammoniac sur l'oxyde cuivrique. et les hydroxo‐complexes de cuivre (II)

Abstract

Summary. Using a new mathematical treatment, the nature and stability constants of the simple and mixed complex-species of copper(I1) with hydroxyde and ammonia as ligands have been determined. The solubility curves of CuO in heterogeneous equilibrium have been identified in function of pH only and in function of pH and pNH,,,, a t 25 "C and unit ionic strength (NaClO,).The predominent species in the relatively dilute system limited by the ionic strength are [Cu2+]

Chemical speciation of environmentally significant metals with inorganic ligands Part 2: The Cu2+-OH-, Cl-, CO32-, SO42-, and PO43- systems (IUPAC Technical Report)

“…The value calculated using the above SIT parameters is 0.92 at I m = 1.05 mol kg -1 (1.0 mol dm -3 NaClO 4 ), which is in good agreement with that reported by [70GHb] …”

Chemical Speciation of Environmentally Significant Metals with Inorganic Ligands. Part 2. The Cu2+—OH‐, Cl‐, CO32‐, SO42‐, and PO43‐ Systems (IUPAC Technical Report)

“…The value calculated using the above SIT parameters is 0.92 at I m = 1.05 mol kg -1 (1.0 mol dm -3 NaClO 4 ), which is in good agreement with that reported by [70GHb] for 1.0 mol dm -3 NaClO 4 (log 10 K 4 = 1.1) and that reported by [96FSa] for 1.0 mol dm -3 KNO 3 (log 10 K 4 = 0.90). Other values reported are: log 10 K 4 = 0.9 (I c = 0.5 mol dm -3 NaClO 4 ) [75LRa] and 0.90 (I m = 0 mol kg -1 ) [36MJa].…”

Aging of copper pipes by drinking water

“…Experimental work by Paulson and Kester (1980) led to a value for log K 1 of ‐16.24 and suggested that their research provided the first consistent measurements for K 1 . These authors observed that the values of K 1 obtained through the Cu(OH) 2(S) solubility method (Gubeli et al, 1970) were two orders of magnitude greater than the values they determined using the Cu(II) ion selective electrode method.…”