Question

which reaction is used for the production of oxygen in laboratory​

Answer 1

Answer:

Hydrogen peroxide

Explanation:

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. As the oxygen collects in the top of the gas jar, it pushes the water out.

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Answer 2

Decomposition reaction

It is a decomposition reaction. Since heat energy is supplied, the reaction is of endothermic nature.