Question

Give two examples of insoluble bases.

Answer 1

Definition of Base:

• Oxides or hydroxides of metals that react with an acid to form salts and water are called bases.
• Few examples: Sodium hydroxide $\left(\mathrm{NaOH}\right)$ and Ammonium hydroxide $\left({\mathrm{NH}}_4\mathrm{OH}\right)$.

Insoluble bases:

• The bases which are insoluble in water are called insoluble bases.

Two examples of insoluble bases are:

1. Copper hydroxide $\left(\mathrm{Cu}{\left(\mathrm{OH}\right)}_2\right)$
2. Calcium hydroxide $\left(\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\right)$