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← ScienceWhich outcome limits reaction yield during exothermic catalysis?
A)Reverse reaction rate accelerates rapidly✓
B)Catalyst surface area decreases drastically
C)Activation energy greatly decreases further
D)Reactant concentration diminishes prematurely
💡 Explanation
Increased temperature due to exothermic heat promotes *Le Chatelier's principle*, favouring the reverse reaction because the system shifts to relieve thermal stress. This leads to a lower product yield rather than achieving complete conversion; therefore, the rate increase limits completion rather than catalyst degradation.
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