CoS (black) obtained in group IV of salt analysis is dissolved in aqua regia and is…
Chemistry · JEE Main · NTA Exams — Principles Related To Practical Chemistry
CoS (black) obtained in group IV of salt analysis is dissolved in aqua regia and is treated with an excess of NaHCO3 and then Br2 water. An apple green coloured stable complex is formed. It is :
- sodium cobaltocarbonate
- sodium cobaltibromide
- sodium cobalticarbonate
- sodium cobaltobromide
Answer
(C) sodium cobalticarbonate
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