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Group IIIA Cations Analysis Procedure by Nicole Anne Borromeo is a document available to read on EtoBox.
1. CoS and NiS dissolve slowly in HCl, producing a black precipitate that dissolves with HNO3, indicating the presence of nickel or cobalt or both. 2. Using too much Na2O2 should be avoided as it can disperse the hydroxides of iron, cobalt, and nickel, interfering with tests for aluminum and zinc. Sufficient Na2O2 is added to bubble for 1 minute to oxidize chromite to chromate, and oxidize ferrous, cobaltous, and manganous hydroxides. 3. The document provides procedures and notes for separating and identi
- Author
- Nicole Anne Borromeo
- Language
- EN