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Which of the following is not produced in an H2-O2 fuel cell?

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in Chemistry – Class 12 by (188k points)
Which of the following is not produced in an H2-O2 fuel cell?

(a) Electricity

(b) Pollutants

(c) Heat

(d) Water

This question was posed to me in a job interview.

My enquiry is from Electrochemistry in division Electrochemistry of Chemistry – Class 12

1 Answer

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Best answer
Correct choice is (b) Pollutants

The explanation: Fuel cells convert the chemical energy of fuel into electricity through combustion. Since combustion is an exothermic reaction, heat is evolved. The overall reaction in an H2-O2 cell is:

2H2 (g) + O2 (g) → 2H2O (l)

Thus, water is also produced.

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