Unit 3 Chemistry End of Chapter 5 Quiz

What is the primary purpose of using porous electrodes in fuel cells?

• To increase the weight of the cell

• To allow gaseous reactants to diffuse more efficiently

• To reduce the cost of the cell

• To prevent the flow of electrons

Which of the following is a key principle of green chemistry in the design of fuel cells?

• Use of non-renewable feedstocks

• Design for energy efficiency

• Maximising waste production

• Increasing the use of fossil fuels

According to Faraday’s Laws, what is required to calculate the amount of product formed in a fuel cell?

• The temperature of the cell

• The current and time

• The pressure of the reactants

• The volume of the cell

Which of the following is NOT a benefit of using fuel cells?

• High energy efficiency

• Low emissions

• High noise levels

• Use of renewable resources

What is the role of innovation in the design of fuel cells?

• To increase the complexity of the design

• To meet society’s energy needs sustainably

• To make fuel cells more expensive

• To reduce the lifespan of the cells

In a fuel cell, what is the function of the electrolyte?

• To conduct electrons

• To separate the anode and cathode

• To provide a medium for ion transport

• To store energy

Which of the following is a contemporary challenge in fuel cell technology?

• Unlimited availability of raw materials

• High cost of production

• Excessive energy output

• Lack of interest in renewable energy

How does stoichiometry apply to fuel cells?

• It determines the colour of the cell

• It calculates the quantity of reactants and products

• It measures the temperature of the cell

• It predicts the lifespan of the cell

What is a common design feature of fuel cells?

• Solid electrodes

• Porous electrodes

• Liquid electrodes

• Magnetic electrodes

Which of the following is a renewable feedstock for fuel cells?

• Coal

• Natural gas

• Hydrogen

• Oil