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Which outcome increases when insufficient surface area limits catalysts during chemical production?

A)Reaction proceeds incomplete and slowly
B)Exothermic reactions become runaway processes
C)Product selectivity increases unexpectedly
D)Catalyst undergoes accelerated thermal degradation

💡 Explanation

Inadequate surface area restricts mass transport of reactants for catalysis, therefore observed reaction rate severely decreases, because the full catalytic potential cannot be realized, producing an incomplete reaction, rather than runaway, altered selectivity, or degradation.

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