First slide
Oxides of Nitrogen
Question

NaNO_2+H_2SO_4\rightarrow NaHSO_4+H_2O+HNO_3+X.

'X' is

Moderate
Solution

NaNO_2+H_2SO_4\rightarrow NaHSO_4+HNO_2
HNO_2\rightarrow HNO_3+NO

HNO2 is unstable and immediately undergoes dispraportionation to form HNO3 & NO. NO is a neutral, paramagnetic oxides.

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