Question

Explain with the help of an activity the nature of metallic oxides and hydroxide and non-metallic oxide by using metal as sodium and non-metal as sulphur.

Answer 1

Hint: The nature of the metallic oxide and non-metallic oxide is decided on the basis of the product of hydrolysis. The metal oxide on dissolving in water produces base. The non-metal oxide on dissolving in water produces acid.

Complete step by step answer:
Metallic oxides and hydroxide have metals and non-metallic oxides have non-metal.
The example of metallic oxide is ${\text{N}}{{\text{a}}_{\text{2}}}{\text{O}}\,$. The example non-metallic oxide is ${\text{S}}{{\text{O}}_{\text{2}}}$.
The reaction of sodium oxide (metallic oxide) with water is as follows:
${\text{N}}{{\text{a}}_2}{\text{O}}\,{\text{ + }}\,{{\text{H}}_2}{\text{O}} \to \,{\text{2 NaOH}}$
The product is sodium hydroxide.
The product of hydrolysis of sodium oxide is sodium hydroxide that is a base, so the sodium oxide is basic.
The metal oxide reacts with water to give base so the metal oxides are basic.
The reaction of sulphur dioxide (non-metallic oxide) with water is as follows:
${\text{S}}{{\text{O}}_{\text{2}}}\,{\text{ + }}\,{{\text{H}}_2}{\text{O}} \to \,{{\text{H}}_2}{\text{S}}{{\text{O}}_3}$
The product is sulphurous acid.
The product of hydrolysis of sulphur dioxide is acidic, so the sulphur dioxide is acidic.
The non-metal oxide reacts with water to give acid so the non-metal oxides are acidic oxide.

Therefore, metallic oxides and hydroxide are basic and non-metallic oxides are acidic.

Note:
The non-metal oxide reacts with a base to give salt and water that also indicates that the non-metal oxides are acidic because an acid always reacts with a base. : The metallic oxide reacts with an acid to give salt and water that also indicates that the metallic oxides are basic because a base always reacts with an acid.