Questions
In brown ring complex, the central metal is
a
Fe(I)
b
Fe(II)
c
Fe(III)
d
Fe(IV)
detailed solution
Correct option is A
- Brown ring is formed during the identification of nitrates when NO reacts with a solution of FeSO4.
- It appears that the oxidation state of Fe is +2, but the transfer of the odd electron from NO to Fe(II) makes them NO+ and Fe(I).
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