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Which risk increases during fuel cell operation at excessively low reactant flow rates?

A)Catalyst surface area increases rapidly
B)Uniform current distribution across cell
C)Rate of local electrode corrosion rises
D)Electrolyte conductivity improves significantly

💡 Explanation

Reduced reactant flow starves the anode, altering the electrode potential; because oxidation kinetics shift unfavorably, interfacial corrosion via the Nernst potential accelerates, rather than producing desirable products; therefore, corrosion increases rather than improves cell operation.

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