What effect does a catalyst have on a reaction?
Answer and explanation
Correct answer: C. It lowers the activation energy
A catalyst gives the reaction a path with lower activation energy, so it goes faster.
Answer: It lowers the activation energy.
Why not the others: It increases the yield at equilibrium: a catalyst does not change the equilibrium position. It is used up in the reaction: a catalyst is unchanged at the end. It raises the temperature: it does not add heat.
Answer: It lowers the activation energy.
Why not the others: It increases the yield at equilibrium: a catalyst does not change the equilibrium position. It is used up in the reaction: a catalyst is unchanged at the end. It raises the temperature: it does not add heat.
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