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Preview questions
1. What is the unit of the rate constant for a second-order reaction?
mol/L·s · L²/mol·s · s⁻ · mol/L²·s
2. Which of the following factors does NOT affect the rate of a chemical reaction?
Concentration · Temperature · Surface area · Color of reactants
3. In a zero-order reaction, the rate of reaction is independent of which factor?
Temperature · Concentration of reactants · Surface area · Catalyst presence
4. The rate of a reaction is defined as the change in concentration of a reactant or product per unit time. What is the general form of the rate expression?
Rate = k[A]^n · Rate = k[A][B] · Rate = k[A]^2 · Rate = k[A][B]^2
5. Which of the following statements is true regarding the Arrhenius equation?
It relates rate to temperature. · It is only applicable to first-order reactions. · It includes the activation energy. · It can be used for all reactions.
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