QuestionJune 5, 2025

Which of the following statements about a catalyst is true? A catalyst accelerates a reaction by lowering the energy of activation. A catalyst accelerates a reaction by raising the energy of activation. A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium. A catalyst accelerates a reaction by lowering the equilibrium constant.

Which of the following statements about a catalyst is true? A catalyst accelerates a reaction by lowering the energy of activation. A catalyst accelerates a reaction by raising the energy of activation. A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium. A catalyst accelerates a reaction by lowering the equilibrium constant.
Which of the following statements about a catalyst is true? A catalyst accelerates a reaction by lowering the energy of activation. A catalyst accelerates a reaction by raising the energy of activation. A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium. A catalyst accelerates a reaction by lowering the equilibrium constant.

Solution
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Answer

A catalyst accelerates a reaction by lowering the energy of activation. Explanation 1. Identify the role of a catalyst A catalyst speeds up a reaction by providing an alternative pathway with a lower activation energy. 2. Evaluate each statement - "A catalyst accelerates a reaction by lowering the energy of activation" is true. - "A catalyst accelerates a reaction by raising the energy of activation" is false. - "A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium" is false; it does not change equilibrium positions. - "A catalyst accelerates a reaction by lowering the equilibrium constant" is false; it does not affect the equilibrium constant.

Explanation

1. Identify the role of a catalyst<br /> A catalyst speeds up a reaction by providing an alternative pathway with a lower activation energy.<br /><br />2. Evaluate each statement<br /> - "A catalyst accelerates a reaction by lowering the energy of activation" is true.<br /> - "A catalyst accelerates a reaction by raising the energy of activation" is false.<br /> - "A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium" is false; it does not change equilibrium positions.<br /> - "A catalyst accelerates a reaction by lowering the equilibrium constant" is false; it does not affect the equilibrium constant.
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