utkarshakash said:Homework Statement
A solution consist of Co+2 and Ni+2 ion in which excess KCN is added and in the resulting solution alkaline Br2 was added. The solution finally consist of which species?
The Attempt at a Solution
I guess some complex would be formed but how to exactly find out the complex? I don't have any idea as this does not involve any equations or mathematical approach. Any ideas?
Pranav-Arora said:Are there any options with the problem?
As you noticed, a complex should form in both the cases, the metal in the complex bears the same oxidation state as before.
Addition of alkaline ##Br_2## (which is basically ##OBr^{-}##) serves as a test to differentiate between the two complexes. ##Ni(OH)_3## precipitates but the cobalt stays in the complex form.
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