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← ScienceWhich outcome arises when platinum catalyst surface area decreases in Haber-Bosch?
A)Equilibrium reached slowly at lower yield✓
B)Ammonia rapidly decomposes into reactants
C)Equilibrium shifts towards ammonia production
D)Catalyst degrades due to nitrogen poisoning
💡 Explanation
Equilibrium is achieved slowly at a lower yield because decreased catalyst surface decreases the number of active sites available for adsorption and reaction, and collision theory suggests reaction rate falls; therefore, equilibrium takes longer, rather than shifting or reversing the reaction completely.
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