A gas X is formed by heating ammonium nitrite. X can also be obtained by heating barium azide. Mg metal burns in X to form Y. Y reacts with water to form a gas zZwhich turns red litmus blue. Identify X,Y and Z. Write all the reactions involved.

Asked by lekhakarthikeyan | 28th Aug, 2018, 03:54: AM

Expert Answer:

1. A gas X is formed by heating ammonium nitrite.
 
   X can also be obtained by heating barium azide.
 
NH subscript 4 NO subscript 2 space rightwards arrow from blank to increment of space space straight N subscript 2 space plus space 2 straight H subscript 2 straight O


Ba open parentheses straight N subscript 3 close parentheses subscript 2 space rightwards arrow from blank to increment of space Ba space plus space 3 straight N subscript 2
Thermal decomposition of ammonium nitrite and barium azide gives nitrogen gas.

Therefore X = Nitrogen gas

2. Mg metal burns in X to form Y.

 
3 Mg space plus space straight N subscript 2 space rightwards arrow with blank on top space Mg subscript 3 straight N subscript 2
Magnesium reacts with nitrogen to give magnesium nitrite.
 
Y = Magnesium nitrite.
 
3. Y reacts with water to form a gas Z which turns red litmus blue.
 
Mg subscript 3 straight N subscript 2 space plus space straight H subscript 2 straight O space rightwards arrow with blank on top space space Mg open parentheses OH close parentheses subscript 2 space plus NH subscript 3 space
 
Z is NH3 turns red litmus blue.
 
Therefore,
 
X = Nitrogen gas (N2)
 
Y=Magnesium nitrite. (Mg3N2)
 
Z=Ammonia (NH3)
 
 

Answered by Varsha | 28th Aug, 2018, 03:11: PM