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KCET2022Chemistryp Block Elements (Group 15, 16, 17 & 18)

( NH ₄ )₂ Cr ₂ O ₇ on heating liberates a gas. The same gas will be obtained by

Options

  1. Aheating NH ₄ NO ₂
  2. Btreating H ₂ O ₂ with NaNO ₂
  3. Ctreating Mg ₃ ~N ₂ with H ₂ O
  4. Dheating NH ₄ NO ₃

Correct answer

A. heating NH ₄ NO ₂

Step-by-step solution

( NH ₄ )₂ Cr ₂ O ₇ and NH ₄ NO ₂ both on heating liberate nitrogen gas. The reaction involve are as follows gathered ( NH ₄ )₂ Cr ₂ O ₇ N ₂ + Cr ₂ O ₃+4 H ₂ O . NH ₄ NO ₃ N ₂ O +2 H ₂ O gathered

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