A catalyst functions to ____________________?
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Answer: C. Shortens the time to reach the equilibrium
Explanation
Catalysts accelerate the forward and reverse reaction rates by the exact same proportion. The equilibrium constant remains completely unchanged because the thermodynamic state function does not vary. Reaching equilibrium happens significantly faster since activation energy barriers are lowered for both directions. Chemical equilibrium is a dynamic state where forward and reverse reaction rates become equal. Catalysts participate in the reaction mechanism but are fully regenerated at the end. Thermodynamic equilibrium constants depend exclusively on temperature and standard enthalpy changes.
Industrial chemical synthesis relies on catalysts to achieve economical production rates at lower temperatures. Ammonia production via the Haber process uses iron catalysts to reach equilibrium rapidly. Selecting the right catalyst saves enormous amounts of energy in large-scale manufacturing plants. Increasing product concentration at equilibrium violates fundamental thermodynamic laws without energy input. Changing the equilibrium constant requires altering the operating temperature of the reactor system. Option D is incorrect because option C correctly answers the stated question about reaction time.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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