Enter the ions formed when (nh4)2s dissolves in water.

The ions formed are NH4(+) and S(2-)

The dissolution reaction of (NH4) 2S in water is as follows:

(NH4) 2S ==> 2 NH4 (+) + S (2-).

Ammonium sulfide is the ammonium salt of hydrogen sulfide. It has the formula (NH4) 2S and belongs to the sulfide family.

It is a relatively unstable compound (crystals decomposing at -18 ° C, but exists and is more stable in aqueous solution.) With a pKa exceeding 15, the hydrosulfide ion cannot be significantly deprotonated by ammonia. Thus, such solutions consist mainly of a mixture of ammonia and hydrosulphide of ammonium, it has a smell, close to that of hydrogen sulfide, and its aqueous solutions can be precisely by emitting H2S.

Dissociation of ions is a process in which substances when dissolve into water will break into ions. In the compound Ammonium Sulfide or (NH)SOthe ions dissociated will be:

The compound ammonium sulfide is the salt of hydrogen sulfide. It is an unstable compound, which dissociates upon heating at 250-degree celcius. The pKa value exceeds 15, therefore, sulphate cannot be deprotonated by ammonia.

Thus, the mixture comprises ammonia and sulphate of ammonium. The compound is characterised by pungent smell.

To know more about dissociation of ions, refer to the following link:

link