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← ScienceWhich outcome results from lowering the reaction temperature, increasing substrate concentration for an enzyme, and keeping other concentrations unchanged?
A)A lower catalyst dissociation constant
B)An increased reaction rate constant
C)A prolonged reaction half-life✓
D)A higher reactant-product equilibrium constant
💡 Explanation
A lower temperature decreases effective collisions; the **Arrhenius equation** describes temperature’s effect on reaction rates. This prolongs reaction half-life because fewer substrate molecules reach transition state, therefore the reaction slows, rather than speeding to equilibrium.
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