Concentration in Chemistry
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Questions and Answers

What is the primary factor that determines the rate of a chemical reaction?

  • The type of molecules that are combining
  • The activation energy required (correct)
  • The surface area of the solid reactants
  • The concentration of reactants

    • How does increasing the temperature affect the rate of a chemical reaction?

  • It decreases the activation energy, making the reaction faster
  • It decreases the concentration of the reactants, making the reaction slower
  • It has no effect on the rate of the reaction
  • It increases the kinetic energy of the reactant molecules, making the reaction faster (correct)

    • Which of the following factors would NOT increase the rate of a chemical reaction?

  • Increasing the surface area of solid reactants
  • Decreasing the activation energy with a catalyst (correct)
  • Increasing the pressure of the reactants
  • Increasing the concentration of the reactants

    • How does the nature of the reactants, such as their chemical composition and bond types, affect the rate of a chemical reaction?

    <p>It determines the activation energy required for the reaction</p> Signup and view all the answers

    Which of the following is NOT a factor that can affect the rate of a chemical reaction?

    <p>The color of the reactants</p> Signup and view all the answers

    If the concentration of an essential element or compound is low, how will that affect the rate of the chemical reaction?

    <p>It will decrease the rate of the reaction</p> Signup and view all the answers

    How does the presence of a catalyst affect the activation energy of a chemical reaction?

    <p>It decreases the activation energy, making the reaction faster</p> Signup and view all the answers

    How does increasing the surface area of solid reactants affect the rate of a chemical reaction?

    <p>It increases the rate of the reaction</p> Signup and view all the answers

    Which of the following factors would have the greatest impact on increasing the rate of a chemical reaction?

    <p>Introducing a catalyst</p> Signup and view all the answers

    If the activation energy of a reaction is high, what effect will that have on the rate of the reaction?

    <p>It will decrease the rate of the reaction</p> Signup and view all the answers

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