Question

Predict what would be observed and why from an aqueous mixture of zinc chloride and silver nitrate

Answer 1

Answer: A white precipitate of silver chloride is formed in the above reaction.

Step-by-step explanation:

Double displacement reaction is defined as the chemical reaction in which exchange of ions takes place.

`AB+CD\rightarrow CB+AD`

When an aqueous solution of zinc chloride reacts with an aqueous solution of silver nitrate, it leads to the formation of aqueous solution of zinc nitrate and a solid silver chloride.

The chemical equation for the reaction of zinc chloride and silver nitrate follows:

`ZnCl_2(aq.)+2AgNO_3(aq.)\rightarrow Zn(NO_3)_2(aq.)+2AgCl(s)`

A white precipitate of silver chloride is formed in the above reaction.

Answer 2

On reacting zinc chloride with silver nitrate, solution turns milky white.

Reason:
Following reaction occurs in present system:

ZnCl2 (aq) + 2AgNO3 (aq) → Zn(NO3)2 + 2AgCl↓
(white ppt.)

The solubility of AgCl in water is extremely poor. Infact, it is a sparingly soluble salt. Hence, it will get precipitate out. Colour of AgCl is white, hence the solution appears to be milky white.