Multiple choice

Which of the following compounds shows the increasing order of nitrogen oxidation state?

  1. HNO3, NH4Cl, NO, H2N2O2, N2

  2. NH4Cl, H2N2O2, NO, N2, HNO3

  3. NH4Cl, N2, H2N2O2, NO, HNO3

  4. N2, H2N2O2, NO, NH4Cl, HNO3

  5. HNO3, H2N2O2, NO, N2, NH4Cl
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oxidation state of N in NH4Cl = x + 4 (+1) + (-1) = 0 ⇒ x = -3N2 (elementary state) ⇒ 0 Oxidation state of N in H2N2O2 = (+1 x 2) + (2x) + (-2 x 2) = 0 ⇒ 2 + 2x - 4 = 0 ⇒ 2x = + 2 ⇒ x = + 1 Oxidation state of N in NO = x +1 (-2) = 0 ⇒ x = +2 Oxidation state of N in HNO3 = + 1 + x + 3 (-2) = 0 ⇒ x – 5 = 0 ⇒ x = +5

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