Introduction to Le Chatelier's Principle

AP Chemistry· difficulty 2/5

reaction coordinate solid: no catalyst dashed: catalyzed

What does the catalyst change?

  • A

    Lowers Ea (forward and reverse) but not K

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  • B

    Increases K

  • C

    Changes dH

  • D

    Lowers Ea forward only and increases K

Explanation

A catalyst lowers activation energy for both forward and reverse paths equally; equilibrium is reached faster but K is unchanged.

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