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EEJ MAIN Chemistry QUESTION #7154
Question 1
Which of the following compounds does not yield nitrogen gas ($N_{2}$) upon thermal decomposition?
  • $NH_{4}NO_{2}$
  • $(NH_{4})_{2}SO_{4}$✔️
  • $Ba(N_{3})_{2}$
  • $(NH_{4})_{2}Cr_{2}O_{7}$
Correct Answer Explanation
Thermal decomposition results:
  • $NH_{4}NO_{2} \xrightarrow{\Delta} N_{2} + 2H_{2}O$
  • $Ba(N_{3})_{2} \xrightarrow{\Delta} Ba + 3N_{2}$
  • $(NH_{4})_{2}Cr_{2}O_{7} \xrightarrow{\Delta} N_{2} + Cr_{2}O_{3} + 4H_{2}O$
  • $(NH_{4})_{2}SO_{4}$ decomposes to release $NH_{3}$ (Ammonia) gas, not $N_{2}$.