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When conc. H2 SO4 is added to dry KNO3 b...

When conc. `H_2 SO_4` is added to dry `KNO_3` brown fumes evolve. These fumes are of

A

`SO_(2)`

B

`SO_(3)`

C

`NO`

D

`NO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`2KNO_(3)+H_(2)SO_(4)to2KHSO_(4)+underset("Brown gas")(2NO_(2))uarr`
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