Question

Zn(NO3)2(aq) and Li2S(aq) Express your answer as a net ionic equation. Identify all of the phases in your answer.

Enter noreaction if no precipitate is formed.

Answer 1

The chemical reaction of two aqueous soluble salts Zn(NO3)2(aq) and  Li2S(aq) undergoes double displacement reaction where the ions of both the salts get exchanged after getting dissociated in the solution and form two new salts. i.e

Molecular equation-   Zn(NO3)2(aq) + Li2S(aq) ----------------> ZnS(s) + 2LiNO3(aq)

Ionic equation- Only the aqueous soluble salts will dissociate into constituent ions and the other remain as precipitate.

Zn+2(aq) + 2(NO3)-(aq) + 2Li+(aq) + S2-(aq) ----------------> ZnS(s) + 2Li+(aq) + 2(NO3)-(aq)

Net ionic equation- Now cancelling the common ions from sides, we get the net ionic equation i.e

  Zn+2(aq) +   S2-(aq) ----------------> ZnS(s)