Nitrates is confirmed by ring test.The brown colour of the ring is due to formation of:

Monjur Alahi

Nitrates is confirmed by ring test.The brown colour of the ring is due to formation of:
A. ferrous nitrite
B. nitroso ferrous sulphate
C. ferrous nitrate
D. `FeSO_(4).NO_(2)`


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Salim Ahmed Kawsar

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Correct Answer - B
`2NO_(3)^(-)+4H_(2)SO_(4)+6Fe^(2+)to6Fe^(3+)+2NOuarr+4SO_(4)^(2-)+4H_(2)O`
`Fe^(2+)+NOuarr +SO_(4)^(2-) to [Fe(NO)]^(2+)SO_(4)^(2-)`

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