JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour change observed will be :
- A Violet → Blue → Pale Blue → Green
- B Pale Blue → Blue → Green → Violet
- C Green → Pale Blue → Blue → Violet
- D Pale Blue → Blue → Violet → Green
Answer & Solution
Correct Answer
(C) Green → Pale Blue → Blue → Violet
Step-by-step Solution
Detailed explanation
\(\left[ Ni \left( H _2 O \right)_6\right]_{( aq )}^{+2}+ en _{( aq )} \rightarrow\left[ Ni \left( H _2 O \right)_4( en )\right]_{( aq )}^{+2}+2 H _2 O\) Green…
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