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← ScienceWhich outcome is observed when increased temperature shifts equilibrium of exothermic reaction in a fixed volume reactor?
A)Reduced product yield at equilibrium✓
B)Increased rate of reverse reaction only
C)Unchanged equilibrium concentrations
D)Elevated activation energy barrier
💡 Explanation
When temperature rises in an exothermic reaction at equilibrium, the Le Chatelier's principle causes the equilibrium to shift toward the reactants to counteract the heat increase, decreasing the product yield. Therefore reduced product formation occurs, rather than increasing rate of reverse, unchanged concentrations or an increased activation energy, which aren't direct results of equilibrium shifts.
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