The electrolyte used in H2 – O2 fuel cell is _____.
Q.1 (i) The electrolyte used in H2 – O2 fuel cell is _____.
A. aqueous KCl
B. aqueous KOH
C. aqueous HCl
D. aqueous KNO3
1 answer
Best answer
Answer: B. aqueous KOH
Answer: (b) aqueous KOH
In the hydrogen–oxygen fuel cell, hydrogen and oxygen are bubbled through porous carbon electrodes dipping in hot concentrated aqueous KOH (or NaOH). Anode: 2H2 + 4OH− → 4H2O + 4e−; cathode: O2 + 2H2O + 4e− → 4OH−.
Doubtly AI
· 27 Oct 2026
AI-verified · Oct 2026
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