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CHEM- Preparation of Oxygen from Hydrogen Peroxide

Chemistry, Preparation of Oxygen, Hydrogen Peroxide - IBDP | DSE | GCE | IAL | AP Chemistry

April 20, 2020

Consider the following example👇

Describe the laboratory preparation of oxygen from hydrogen peroxide using manganese (IV) oxide as the catalyst.

Here is the experimental set-up for the reaction🔬

Equation

2H2O2 (aq) ⇨ 2H2O(l) + O2(g)

*Manganese(IV) oxide serves as the catalyst which helps speed up the rate of reaction

Procedure: Hydrogen peroxide is added to a conical flask containing some manganese(IV) oxide. Then, the gas produced is collected over water. As the oxygen gets accumulated in the top of the gas jar, it pushes the water out.

Collection Over Water

Connect a delivery tube to bubble the gas into an upside-down measuring cylinder in a beaker full of water as shown in the experimental set-up

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