Question

Given,$N{H_3}$ is:
A.A strong acid
B.A strong base
C.A weak acid
D.A weak base

Answer 1

We need to know that ammonia is a chemical element having the formula $N{H_3}$ which contains the components nitrogen and hydrogen. The ammonia is a stable binary hydride and it does not have any color and it has a pungent smell. Mainly the ammonia is used in the fertilizer which helps to sustain the production of food. And the ammonia is naturally produced in our body. The ammonia is also used for the preparation of plastics.

Complete answer:
The ammonia is not a strong acid. Hence, option (A) is incorrect.
The ammonia is not a strong base. Hence, option (B) is incorrect.
The ammonia is not a weak acid. Hence, option (C) is incorrect.
The ammonia is a weak base. Actually, the ammonia does not contain the hydroxide ions. But when the ammonia reacts with water, there is a formation of hydroxide ions as well as the ammonium ions and it is a reversible reaction. And the ammonia will not be completely converted into ammonium ions in the solution. The ammonia acts as a weak base because of the presence of lone pairs of the nitrogen atom and it has the capacity to donate it.
Hence, we can say that the ammonia acts as a weak base due to the presence of an electron pair of the nitrogen atom which is readily capable of accepting the protons. And also when it dissolves in water, which forms hydroxide ions and ammonium ions by acquiring the hydrogen ions.

Note:
Typically the ammonia is considered the weak base. According to the strong base, when it is dissolved in the water, it completely ionizes and there is a formation of a large amount of hydroxide ions. And in the case of weak bases, when it is dissolved in the water, it will not completely dissociate and there is only a formation of a few amounts of hydroxide ions.