Question

Give two examples each of soluble salts and insoluble salts.

Answer 1

Soluble salt:

• A soluble salt can be prepared by a direct combination of two elements (a metal and the other non-metal) or the action of an acid on an insoluble base.
• For example: Ferric chloride $\left({\mathrm{FeCl}}_3\right)$ and Copper chloride $\left({\mathrm{CuCl}}_2\right)$.

Insoluble salt:

• An insoluble salt can either be formed by a direct combination of two elements (a metal and the other non-metal) or precipitation (double decomposition)
• For example: Lead sulfate $\left({\mathrm{PbSO}}_4\right)$ and Calcium carbonate $\left({\mathrm{CaCO}}_3\right)$.