Question

Some word/words are missing in the following statement. You are required to rewrite the statement in the correct form using the appropriate word/words:
Magnesium nitride reacts with water to liberate ammonia.

Answer 1

Reaction of magnesium nitride $\left({\mathrm{Mg}}_3{\mathrm{N}}_2\right)$ and water:

• In the laboratory, ammonia gas $\left({\mathrm{NH}}_3\right)$ can also be prepared by pouring warm water on magnesium nitride $\left({\mathrm{Mg}}_3{\mathrm{N}}_2\right)$.
• When water is poured over magnesium nitride, ammonia gas and hydroxide of respective metals are formed.
• ${\mathrm{MgN}}_2\left(\mathrm{s}\right)+6{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)⟶3\mathrm{Mg}(\mathrm{OH}{)}_2\left(\mathrm{aq}\right)+2{\mathrm{NH}}_3(\mathrm{g})\uparrow$

The complete statement would be:

Magnesium nitride reacts with warm water to form magnesium hydroxide and liberate ammonia.