Green Chemistry Principles - Catalysts

The video tutorial discusses catalysts, explaining their role in increasing chemical reaction rates and their ability to be reused. It highlights the disadvantages of catalysts, such as cost and toxicity, and compares metal catalysts with enzymes, noting the latter's advantages in certain conditions. The video also covers the use of catalysts in drug design and industrial applications like desulfurization to prevent acid rain. Finally, it touches on advancements in fuel cells to enhance electric catalysis efficiency.

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

• To increase the temperature of the reaction

• To increase the rate of the reaction

• To decrease the pressure of the reaction

• To change the color of the reactants

Which of the following is a disadvantage of using catalysts?

• They are always cheap

• They can be made of toxic metals

• They work in all temperature ranges

• They are never selective

Why might enzymes be preferred over metal catalysts in some reactions?

• They can operate at ambient temperatures

• They work at high temperatures

• They require non-aqueous conditions

• They are less selective

What is the purpose of desulfurization of fuels in industry?

• To increase fuel efficiency

• To enhance the color of the fuel

• To reduce atmospheric sulfur

• To increase the sulfur content

How do improved catalysts benefit fuel cells?

• By reducing the need for recharging

• By making them larger

• By increasing their weight

• By making them more expensive