Question

why is hydrogen peroxide preferred in the preparation of Oxygen gas

Answer 1

To make oxygen in the laboratory, hydrogen peroxide is poured into a conical flask containing some manganese(IV) oxide. The gas produced is collected in an upside-down gas jar filled with water. ... Instead of the gas jar and water bath, a gas syringe could be used to collect the oxygen.

Answer 2

here's the answer.....

hydrogen peroxide is preferred instead of potassium chloride the preparation of oxygen because of the following reasons:

• potassium chloride is a dangerous chemical where is hydrogen peroxide is a safe chemical.

• the rate of evolution of Oxygen gas is too high and great care is required to collect the gas.