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← ScienceWhich risk increases when a chemical reactor's temperature setpoint exceeds a safety limit?
A)Runaway reaction and thermal explosion✓
B)Decreased catalyst binding affinity
C)Reduced product stream concentration
D)Change in first order rate constant
💡 Explanation
A runaway reaction and thermal explosion becomes likely, because exceeding temperature limits exponentially increases the reaction rate via the Arrhenius equation. The increased reaction rate amplifies heat generation; therefore the system fails, rather than maintaining stable process control.
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