Which risk increases when an industrial ammonia synthesis reactor exceeds its design temperature limit?

💡 Explanation

Exceeding temperature limits accelerates catalyst sintering which reduces effective surface area, because heightened thermal energy overcomes interparticle forces, therefore activity decreases, rather than pressure or poisoning, which are separate mechanisms.

• Which mechanism hinders free rotation around carbon-carbon bonds in hindered biaryl molecules?
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• Which mechanism increases reaction rate significantly above theoretical collision rate predicted by Arrhenius equation?
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• Which risk increases when emergency cooling fails within fission reactor?
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