CH-735
Hydrogen fuel cells
Chemistry · Secondary 3 · Hard · Hydrogen fuel cells
Two cars travel the same distance.
Car X: hydrogen fuel cell, overall reaction .
Car Y: petrol engine, simplified reaction .
Which statement about their exhaust gases is correct?
Car X: hydrogen fuel cell, overall reaction .
Car Y: petrol engine, simplified reaction .
Which statement about their exhaust gases is correct?
- Only Car Y releases carbon dioxide from its exhaust.
- Both cars release carbon dioxide because they both use oxygen.
- Only Car X releases carbon dioxide because hydrogen is very reactive.
- Neither car releases carbon dioxide because water is the only product.
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