Q8 / 60 · KVPY 2011 (SA) · Chemistry

The gas produced from thermal decomposition of $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ is

  • A
    oxygen
  • B
    nitric oxide
  • C
    ammonia
  • Correct answer
    D
    nitrogen

Solution

$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \stackrel{\Delta}{\longrightarrow} \mathrm{N}_{2}+\mathrm{Cr}_{2} \mathrm{O}_{3}+4 \mathrm{H}_{2} \mathrm{O}$

Hence, the correct answer is option: 'D'.

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