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Redox Reactions — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions1 Mark
MCQ
When ammonium nitrate is gently heated, an oxide of nitrogen is formed. What is the oxidation state of nitrogen in this oxide?
  • A
    $+4$
  • B
    $+2$
  • C
    $+3$
  • ✓
    $+1$
✓

Answer

Correct option: D.
$+1$
When ammonium nitrate is gently heated, dinitrogen monoxide $\ce{N_2O}$ is obtained.
Let $x$ be the oxidation state of $N$ in $\ce{N_2​O}.$
The oxidation state of oxygen is $−2.$
The sum of the oxidation states for neutral molecule is $0.$
Hence, $2x+(−2) = 0$ or, $x = +1.$
Therefore, the oxidation state of $N$ is $+1.$

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