Which of the following factors can affect the rate of a chemical reaction?

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Question 1: Which of the following factors can affect the rate of a chemical reaction?

Step 1: Evaluate each factor.

• I. Concentration of reactant: Increasing the concentration of reactants generally increases the frequency of collisions between reactant molecules, leading to a faster reaction rate.
• II. Temperature of the reaction system: Increasing the temperature increases the kinetic energy of reactant molecules, leading to more frequent and more energetic collisions, which increases the reaction rate.
• III. Presence of a catalyst: A catalyst provides an alternative reaction pathway with a lower activation energy, thereby increasing the reaction rate without being consumed in the reaction.
• IV. Nature of the reactant: The inherent chemical properties of the