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Which of the following is not produced in an H2-O2 fuel cell?(a) Electricity(b) Pollutants(c) Heat(d) WaterThis question was posed to me in a job interview.My enquiry is from Electrochemistry in division Electrochemistry of Chemistry – Class 12

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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