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JEE Main 202228 JuneMorning Shift
Exam
JEE Main
Year
2022
Date
28 June
Shift
Morning Shift
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2022 · 28 June · Morning Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Nitrogen gas is obtained by thermal decomposition of:

Nitrogen gas is obtained by thermal decomposition of:

Options

  1. ANaNO2{NaNO}_{2}
  2. BNaNO3{NaNO}_{3}
  3. CBa{\left({N}_{3}\right)}_{2}
  4. DBa{\left({NO}_{3}\right)}_{2}

Correct answer

C. Ba{\left({N}_{3}\right)}_{2}

Step-by-step solution

NaNO3→∆NaNO2+12O2{NaNO}_{3}\overset{∆}{\to}{NaNO}_{2} + \dfrac{1}{2}{O}_{2}

(Thermally stable and does not undergo decomposition further)

Ba(N3)2→∆Ba+3N2Ba{\left({N}_{3}\right)}_{2}\overset{∆}{\to}Ba + 3{N}_{2}

2Ba(NO3)2→∆2BaO+4NO2+O22Ba{\left({NO}_{3}\right)}_{2}\overset{∆}{\to}2BaO + 4{NO}_{2} + {O}_{2}

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