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← ScienceWhich outcome occurs when system temperature significantly increases exceeding the rate constant assumptions in an exothermic reaction?
A)Runaway reaction accelerating exponentially✓
B)Equilibrium shift favoring reactants
C)Catalyst deactivation halting reaction
D)Increased product selectivity stabilizing rate
💡 Explanation
When the temperature increases significantly, the reaction rate will increase exponentially, exceeding the rate constant's validity range because of the Arrhenius equation dependency, causing a thermal runaway. Therefore a runaway reaction will occur, rather than equilibrium shift, catalyst deactivation, or increased product which require more controlled conditions.
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