CBSE Class 12-science Answered
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 | 28 Aug, 2018, 03:54: AM
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](https://images.topperlearning.com/topper/tinymce/cache/d3af819a73b468bbcc315ef1813748cd.png)
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](https://images.topperlearning.com/topper/tinymce/cache/f60edd121c14906538a24cc4dbb019ce.png)
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](https://images.topperlearning.com/topper/tinymce/cache/0461cef13a39d0382919a150f6b531bd.png)
Z is NH3 turns red litmus blue.
Therefore,
X = Nitrogen gas (N2)
Y=Magnesium nitrite. (Mg3N2)
Z=Ammonia (NH3)
Answered by Varsha | 28 Aug, 2018, 15:11: PM
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