Essential Chemistry for IGCSE - Chemical Reactions (Section 2 - No. 41)
What is the effect of adding a catalyst to a reversible reaction?
The equilibrium position shifts.
The reaction rate increases, but the equilibrium position does not change.
The reaction rate decreases, and the equilibrium position shifts to the left.
The reaction rate decreases, and the equilibrium position shifts to the right.
Explanation
A catalyst speeds up both forward and reverse reactions, so it shortens the time to reach equilibrium but does not change the equilibrium position.
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