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  4. Which nitrate will decompose to give NO2 on heating?

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Q. Which nitrate will decompose to give $NO_2$ on heating?

The s-Block Elements

Solution:

Only $LiNO_3$ gives $NO_2$ on heating. All other nitrates give oxygen.
$4LiNO_3 \xrightarrow{\Delta} 2Li_2O +4NO_2 +O_2$
$2NaNO_3 \xrightarrow{\Delta} 2NaNO_2 +O_2$