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Brown ring test is used for detection of...

Brown ring test is used for detection of which radical?

A

Ferrous

B

Nitrite

C

Nitrate

D

Ferric

Text Solution

Verified by Experts

The correct Answer is:
C
Brown ring test is used for the detection of nitrate radical.
`2NaNO_3=2H_2SO_4to2NaHSO_4+2HNO_3`
`2HNO_3+6FeSO_4+3H_2SO_4to3Fe_2(SO_4)_3+2NO+4H_2O`
`[Fe(H_2O)_6]SO_4+NOto[Fe(H_2O)_5NO]^(2+)SO_4^(2-)+H_2O` (Brown ring)
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