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← ScienceWhich outcome affects overall reaction rate when pressure increases in an industrial ammonia synthesis reactor vessel?
A)Lower activation energy requirement occurs
B)Increased effective reactant concentration✓
C)Decreased equilibrium constant is present
D)Catalyst surface area is amplified
💡 Explanation
Concentration increases because higher pressure forces more reactant molecules into a smaller volume, increasing collision frequency via collision theory; therefore, the reaction rate increases, rather than alterations to individual molecule activation energies or equilibrium shifts.
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