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🔬
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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