Class 12 Chemistry P Block Elements Preparation of Dioxygen

Preparation of dioxygen

General method of preparation:

We get oxygen whenever we heat any metal oxide like:

Class_12_Group_16_Preparation_Of_DiOxygen

In laboratory we prepare oxygen by:

By heating potassium chlorate

Class_12_Group_16_Lab_Preparation_Of_DiOxygen

This reaction occurs on heating, in presence of MnO2 at 420k.

Industrial preparation: By electrolysis of water.

The silent electric discharge is passed so that the reaction do not becomes reversible.

H2 + O2 ---> H2O

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