Catalyst Classes

Mr. Anderson explains the three types of catalysts: acid-base, surface, and enzyme catalysts. Acid-base catalysts involve proton transfer to speed up reactions, exemplified by sulfuric acid in refining processes. Surface catalysts, often metals, increase reaction rates through adsorption, as seen in the Haber process. Enzyme catalysts, biological in nature, lower activation energy and facilitate reactions in living organisms, such as the breakdown of sucrose by sucrase.

What are the three main types of catalysts discussed in the video?

• Acid-base, surface, and enzymes

• Metal, non-metal, and biological

• Organic, inorganic, and synthetic

• Physical, chemical, and biological

How do acid-base catalysts speed up reactions?

• By increasing temperature

• By transferring protons

• By increasing pressure

• By changing the pH

What is the role of sulfuric acid in the production of isooctane?

• It increases pressure

• It acts as a solvent

• It donates a proton

• It absorbs heat

What is a key characteristic of surface catalysts?

• They are organic compounds

• They are always liquid

• They are non-reactive

• They are made of metal

Which process is an example of a reaction catalyzed by surface catalysts?

• Fermentation

• Haber process

• Electrolysis

• Photosynthesis

What is the function of enzyme catalysts in biological systems?

• They increase temperature

• They lower activation energy

• They change the pH

• They increase pressure

Which enzyme is responsible for breaking down sucrose?

• Protease

• Lactase

• Amylase

• Sucrase