Question
Question: When freshly prepared FeSO₄ is added to the sodium nitrate solution followed by the addition of conc...
When freshly prepared FeSO₄ is added to the sodium nitrate solution followed by the addition of concentrated H₂SO₄ dropwise then brown ring complex is formed. Which of the following property is correct for the formed complex
A
EAN value of complex is 36
B
Complex have cyclic ring in structure
C
Complex has Fe - N linkage
D
None of these
Answer
Complex has Fe - N linkage
Explanation
Solution
The brown ring complex formed in the test for nitrates is [Fe(H₂O)₅(NO)]²⁺. In this complex, the nitrosyl ligand (NO) is bonded to the central iron atom through the nitrogen atom. This forms a direct Fe-N bond.