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Which process limits equilibrium conversion in a chemical reactor operating near thermodynamic equilibrium, as described by equilibrium constants?

A)Reverse reaction kinetics approaching forward rate
B)Catalyst poisoning lowering reaction rates
C)Mass transfer limitations in viscous solutions
D)Heat removal inefficiencies causing thermal runaway

💡 Explanation

As the reaction approaches equilibrium, the reverse reaction rate increases, becoming comparable to the forward rate determined by the equilibrium constant, thus limiting further net conversion because forward and reverse reactions balance. Therefore reverse kinetics impact conversion, rather than catalyst poisoning, mass transfer, or heat issues, which involve other mechanisms.

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