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CGP EDU Academic Team
Published on: August 14, 2026
When concentrated HCl is added to an aqueous solution of CoCl 2 , its colour changes from reddish pink to deep blue. Which complex ion gives blue colour in this reaction?
Text Solution
Verified by ExpertsThe correct answer is:
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[CoCl 4 ] 2– is formed which is blue in colour.
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