Coordination CompoundHard
Question
An aqueous solution of CoCl2 on addition of exess of concentrated HCl turns blue due to formation of :
Options
A.[Co(H2O)4Cl2]
B.[Co(H2O)2Cl4]2-
C.[CoCl4]2-
D.[Co(H2O2)2Cl2]
Solution
CoCl2 is a weak lewis acid. It reacts with chloride ion to produce salt containing the tetrahedral [CoCl4]2- ion which is blue in colour.
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