chemistry - separate chemistry: chemical cells & fuel cells (5.25 - 5.27)

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5 Terms

1
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5.25 chemical cell produces... until...

chemical cell produces a voltage until one of reactants is used up

2
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5.26 what is used to produce a voltage in hydrogen-oxygen fuel cell?

hydrogen & oxygen

3
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5.26 what is only product in hydrogen-oxygen fuel cell?

water

4
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5.27 fuel cells - strengths

quieter than petrol/diesel engine

need less maintenance than petrol/diesel engine

do not produce carbon dioxide (greenhouse gas)

5
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5.27 fuel cells - weaknesses

hydrogen needs to be stored in tank

most hydrogen manufactured by reaction of steam with coal/natural gas - release carbon dioxide as by-product