Practice Operating Principles (1.4) - Fuel Cells

Practise this section

10 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the main function of the anode in a fuel cell?
Show hintHide hint
Think about where the oxidation process occurs.
Question 2.
Name one type of application for fuel cells.
Show hintHide hint
Consider where you might find fuel cells being used today.
3Question 3.
What is the primary reaction at the anode in a hydrogen fuel cell?
Show hintHide hint
Focus on what happens to hydrogen in the reaction.
4Question 4.
Is the electrolyte in a fuel cell conductive for electrons?
- True
- False
Show hintHide hint
Recall what electrons do in the circuit.
Question 5.
A fuel cell with a maximum Gibbs free energy change of 237 kJ/mol and an enthalpy change of 286 kJ/mol is being evaluated. Calculate its theoretical efficiency.
Show hintHide hint
Use the efficiency formula with Gibbs free energy and enthalpy.
Question 6.
Compare the environmental impact of a fuel cell powered by hydrogen versus a gasoline combustion engine. Discuss efficiency, emissions, and renewable potential.
Show hintHide hint
Consider efficiency and byproducts in your comparison.

6 more questions in this section. Enroll free to practise them all.