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← ScienceWhich outcome occurs in a closed chemical reactor at equilibrium when temperature rapidly increases?
A)Endothermic reaction rate increase accelerates✓
B)Exothermic reaction rate increase accelerates
C)Equilibrium constant remains unchanged initially
D)Total pressure remains constant initially
💡 Explanation
When temperature increases, the equilibrium shifts according to Le Chatelier's principle because higher temperatures favor reactions that absorb heat. This causes the rate of the endothermic reaction to increase more than the exothermic reaction rate. Therefore endothermic reaction acceleration results, rather than exothermic due to equilibrium conditions.
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