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In the test for nitrate, the composition...

In the test for nitrate, the composition of brown ring is

A

`FeSO_(4).N_(2)O`

B

`FeSO_(4).NO`

C

`FeSO_(4)NO_(2)`

D

`Fe(NO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`3Fe^(2+)+NO_(3)^(-)+4H^(+)rarrNO+3Fe^(3+)+2H_(2)O`
`Fe^(3+)+NO+5H_(2)Orarrunderset(("Brown complex"))([Fe(H_(2)O)_(5)NO]^(2+)`
`FeSO_(4)+NOrarrFeSO_(4).NO`
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