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In the brown ring test , the brown colou...

In the brown ring test , the brown colour of the ring is due to

A

a mixture of NO and `NO_(2)`

B

nitrosoferrous sulphate

C

ferrous nitrate

D

ferric nitrate

Text Solution

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The correct Answer is:
B
No forms dark brown nitrosoferrous sulphate.
`underset("Impure gas")(FeSO_(4)+NO)tounderset("dark brown")(FeSO_(4)*NO)` (Nitrosoferrous sulphate) When this solution is heated , pure nitric oxide is liberated .
`FeSO_(4)*NOoverset("heat")toFeSO_(4)+underset("pure gas")(NO)`
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