Which outcome occurs when iron catalysts in Haber-Bosch reactors become poisoned?

💡 Explanation

Exposure poisons blocks catalytic sites; Haber-Bosch uses surface catalysis. *Catalyst poisoning* decreases surface reaction availability, therefore ammonia production drops quickly, rather than altered iron structure or increased pressure, because adsorbed gases cannot react.

• Which mechanism leads to uncontrolled heat generation in moderator-rejected nuclear reactor configurations?
• Which outcome arises via Einstein's equivalence principle when an observer within a freely falling elevator shines a laser horizontally?
• Which outcome results when excessive doping narrows semiconductor band gaps?
• Which outcome minimizes the electron's probability of presence between quantum dots?
• Which risk increases when a cable's dielectric fails?
• Which electronic configuration change leads to luminous emission in OLED display pixels during operation?