KCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Very pure \( \mathrm{N}_{2} \) can be obtained by
- A Thermal decomposition of ammonium dichromate
- B Treating aqueous solution of \( \mathrm{NH}_{4} \mathrm{Cl} \) and \( \mathrm{NaNO}_{2} \)
- C Liquifaction and fractional distillation of liquid air
- D Thermal decomposition of sodium azide
Answer & Solution
Correct Answer
(D) Thermal decomposition of sodium azide
Step-by-step Solution
Detailed explanation
By heating sodium azide, pure nitrogen can be obtained
\( 2 N a N_{3}-->2 N a+3 N_{2} \)
Sodium a zide
\( 2 N a N_{3}-->2 N a+3 N_{2} \)
Sodium a zide
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