Question

Mg + N2 +X+ H2O + Colourless gas + CuSO4 → Blue Colour.
In this reaction sequence X is :
(A) Mg(NO3)2
(B) MgzN2
(C) NH3
(D) Mgo​

Answer 1

Answer:

When magnesium metal is heated in nitrogen, it forms magnesium nitride.

3Mg+N  

2

​  

→Mg  

3

​  

N  

2

​  

 

Hydrolysis of magnesium nitride gives magnesium hydroxide and ammonia.

Mg  

3

​  

N  

2

​  

 

water

​  

Mg(OH)  

2

​  

+NH  

3

​  

↑

When ammonia gas is dissolved in the copper sulphate solution, blue colour is obtained.

Explanation: