Fuel Cells (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What do fuel cells generate through redox reactions?
What do fuel cells generate through redox reactions?
Electric current
Why don't fuel cells need recharging?
Why don't fuel cells need recharging?
Continuous fuel & oxidant supply
What is the only waste product of an alkaline hydrogen-oxygen fuel cell?
What is the only waste product of an alkaline hydrogen-oxygen fuel cell?
Water
What happens to hydrogen at the anode of an alkaline fuel cell?
What happens to hydrogen at the anode of an alkaline fuel cell?
It is oxidised, releasing electrons
At the cathode of an alkaline fuel cell, oxygen reacts with water and electrons to form what?
At the cathode of an alkaline fuel cell, oxygen reacts with water and electrons to form what?
Hydroxide ions
What is the overall cell reaction in an alkaline hydrogen-oxygen fuel cell?
What is the overall cell reaction in an alkaline hydrogen-oxygen fuel cell?
How do fuel cells compare to internal combustion engines in terms of efficiency?
How do fuel cells compare to internal combustion engines in terms of efficiency?
More efficient
During operation, what emissions does an alkaline hydrogen-oxygen fuel cell produce?
During operation, what emissions does an alkaline hydrogen-oxygen fuel cell produce?
No toxic emissions or
Why does hydrogen production reduce the environmental benefit of fuel cells?
Why does hydrogen production reduce the environmental benefit of fuel cells?
Electrolysis often relies on fossil fuels
What major safety concern is associated with hydrogen fuel?
What major safety concern is associated with hydrogen fuel?
Highly flammable