When ammonia is added to green aqueous solution of nickel (II) sulphat – InterviewSolution

InterviewSolution

1.	When ammonia is added to green aqueous solution of nickel (II) sulphate, the colour of the solution changes to the violet. This is caused byA. nickel ion undergoing a change in oxidation stateB. ammonia molecules replacing water molecules surrounding nickelC. change in co-ordination number of nickelD. change in pH value of the solution.
Answer» Correct Answer - B The colour change is due to replacement of water molecules surrounding Ni by the ammonia molecules.

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