Published by:
CGP EDU Academic Team
Published on: August 13, 2026
When aqueous solutions of potassium fluoride is added to the blue coloured aqueous 
solutions, a green precipitate is formed. This observations can be explained as follows.
A
On adding KF, 
being weak filed ligand is replaced by 
ions forming 
which is green in colour.
being weak filed ligand is replaced by ions forming which is green in colour.
B
Potassium is coordinated to 
ion present in 
and gives green colour.
ion present in and gives green colour.
C
On adding KF, 
are replaced by 
forming a green complex.
are replaced by forming a green complex.
D
Blue colour of 
and yellow colour of KI form green colour on mixing.
and yellow colour of KI form green colour on mixing.
Text Solution
Verified by ExpertsThe correct answer is:
A
Aqueous 
solutions contains 
ions which are blue in colour. When aqueous solutions of KF is added, 
being weak filed ligand can be replaced by 
ions forming 
which is green in colour. 
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