Catalysts and Decomposition of Hydrogen Peroxide

The video explains the decomposition of hydrogen peroxide (H2O2) into water and oxygen, highlighting the role of catalysts like manganese dioxide (MnO2) and the enzyme catalase. It describes how catalysts speed up the reaction without being consumed, using MnO2 as an example. The video concludes with a summary of the reaction process.

What are the products formed when hydrogen peroxide decomposes?

• Hydrogen and water

• Hydrogen and oxygen

• Water and oxygen

• Water and carbon dioxide

What is observed when hydrogen peroxide is applied to a wound?

• It evaporates quickly

• It produces bubbles of oxygen

• It forms a solid layer

• It turns blue

What is the role of a catalyst in a chemical reaction?

• It is consumed in the reaction

• It slows down the reaction

• It speeds up the reaction without being consumed

• It changes the products of the reaction

Which enzyme in the blood acts as a catalyst for the decomposition of hydrogen peroxide?

• Lipase

• Protease

• Catalase

• Amylase

Why is MnO2 written above the reaction arrow in the decomposition of H2O2?

• Because it is a reactant

• Because it is a product

• Because it is a catalyst and remains unchanged

• Because it is an inhibitor

What happens to MnO2 after the decomposition of hydrogen peroxide?

• It is converted into oxygen

• It is converted into water

• It is consumed in the reaction

• It remains unchanged