Nitrogen gas is obtained by thermal decomposition of:

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Nitrogen gas is obtained by thermal decomposition of:

Chemistryp Block Elements (Group 15, 16, 17 & 18)JEE MainJEE Main 2022 (28 Jun Shift 1)

Options:

A ${NaNO}_{2}$
B ${NaNO}_{3}$
C $Ba {(N_{3})}_{2}$
D $Ba {({NO}_{3})}_{2}$

Solution:

1877 Upvotes Verified Answer

The correct answer is:

Ba {(N_{3})}_{2}

${NaNO}_{3} \overset{∆}{\to} {NaNO}_{2} + \frac{1}{2} O_{2}$

(Thermally stable and does not undergo decomposition further)

$Ba {(N_{3})}_{2} \overset{∆}{\to} Ba + 3 N_{2}$

$2 Ba {({NO}_{3})}_{2} \overset{∆}{\to} 2 BaO + 4 {NO}_{2} + O_{2}$

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