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← ScienceWhich outcome occurs with ammonia synthesis at sub zero when catalysts pores constrict?
A)Reaction rate is markedly lowered✓
B)Catalyst undergoes thermal decomposition
C)Surface area increases substantially
D)Ammonia yield improves proportionally
💡 Explanation
The Haber-Bosch process slows substantially because quantum tunneling effects through contracted catalyst pores become relevant; therefore reaction rate drops, rather than increasing surface area since diffusion limitations are compounded.
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