Does a precipitate form when zinc nitrate and ammonium sulfide mix? If so, what is the empirical formula of the precipitate

Answer 1

Yes, a precipitate does form when zinc nitrate (${\text{Zn(NO}}_3{\text{)}}_2$) and ammonium sulfide (${\text{(NH}}_4{\text{)}}_2\text{S}$) are mixed. The reaction can be represented as follows:

$${\text{Zn(NO}}_3{\text{)}}_2+{\text{(NH}}_4{\text{)}}_2\text{S}\to \text{ZnS}\downarrow +2{\text{NH}}_4{\text{NO}}_3$$

In this reaction, zinc sulfide ($\text{ZnS}$) forms as a solid precipitate. The empirical formula of the precipitate is $\text{ZnS}$.