Cambridge IGCSE Chemistry practice

Paper 3 structured question: Hydrogen-oxygen fuel cells

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Paper

Marks

Topic

Hydrogen-oxygen fuel cells

Exam-style question

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Paper 3Theory (Core)2 marks

The use of hydrogen-oxygen fuel cells is growing in various applications.

Description

Hydrogen-oxygen fuel cells are used in vehicles, stationary power generation, and portable power devices.

a
Identify two gases used in hydrogen-oxygen fuel cells.
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Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)1 marks

Description

These fuel cells generate electricity through the reaction of hydrogen and oxygen, producing water as the only byproduct.

a
State the main byproduct of a hydrogen-oxygen fuel cell.
Your answer
Aim for approximately 1 distinct marking point.
[1]