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← ScienceWhich outcome occurs when excess hydrogen accumulates post-hydrolysis within a fuel cell?
A)Platinum catalyst surface poisoning occurs✓
B)Anode-side water production increases
C)Electrolyte membrane conductivity increases
D)Cathode material oxidation rate decreases
💡 Explanation
Platinum surface poisoning lowers catalyst activity because hydrogen blocks reactant adsorption sites during electrochemical oxidation in fuel cells; therefore, efficiency drops, rather than water production increasing at the anode under normal operations.
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