Identify A and B from the following reaction NaNO 3 ⟶ ∆ xA + yB

Identify $A$ and $B$ from the following reaction

${NaNO}_{3} \overset{∆}{⟶} xA + yB$

${NaNO}_{2}, O_{2}$
${Na}_{2} O, {NO}_{2}$
${Na}_{2} O, NO$
$Na, {NO}_{2}$

Solution

Almost all nitrates liberates the nitrogen dioxide gas on heating. But alkali metal nitrates liberates oxygen gas on heating except lithium nitrate. Hence, sodium nitrate gives sodium nitrite and oxygen gas.
${NaNO}_{3} \overset{∆}{\to} {NaNO}_{2} + \frac{1}{2} O_{2}$

Asked in: AP EAMCET 2022 (04 Jul Shift 1)

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