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← ScienceWhich outcome occurs when a catalyst introduces unoccupied molecular orbitals into a reaction pathway?
A)The activation energy will be reduced✓
B)The reaction equilibrium constant increases
C)The reaction rate becomes temperature-independent
D)The overall enthalpy change will decrease
💡 Explanation
When a catalyst introduces unoccupied molecular orbitals, a new reaction pathway with a lower energy transition state forms because the catalyst facilitates a different, more stable, intermediate. Therefore, the activation energy reduces, rather than changing equilibrium, abolishing temperature dependence, or decreasing enthalpy change, which alter fundamental thermodynamic properties.
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