Chemistry (2018) | JEE 2018 | Discussion Page

The compound that does not proudce nitrogen gas by the thermal decomposition is

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

B) $(NH_{4})_{2}Cr_{2}O_{7}$

C) $(NH_{4})_{2}SO_{4}$

D) $NH_{4}NO_{2}$

Option C

The thermal decomposition of given compounds is shown below

(NH₄)₂Cr₂O₇$ \underrightarrow{\triangle}$ N₂+ 4H₂O + Cr₂O₃

NH₄NO₂$\underrightarrow{\triangle}$ N₂ + 2H₂O

(NH₄)₂SO₄$\underrightarrow{\triangle}$ 2NH₃ + H₂SO₄

Ba(N₃)₂$\rightarrow$ Ba + 2N₂

Thus, only (NH4)₂SO₄ does not gives N₂on heating (It gives NH₃). While the rest of the given compounds gives N₂ on their thermal decomposition.

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