PHYSICO-CHEMICAL INVESTIGATIONS ON THE BASIC CORBONATE OF COBALT

Abstract

The composition and nature of the precipitate obtained by the addition of a solution of sodium cafbonatt to a solution of cobali sulphate is examined by chemical analgrin and potentiometric studies. The effect of ageing on the precipitate bas been studied with respect to its composition as well as to its surface properties determined by methylene blue dye adsorption method. The effect of different desiccants on the composition oithe basic carbanate has been studied by thermogravimetric method. These studies have ahown that it is possible to prepare samples of basic carbonates of cobalt in solid condition with the following cornpositiona-
(i) 4CoCO3 .5Co(OH)2. 5H20 and
(ii)4CoC03 .5CO(OH)2. H2O