Factors Affecting Rate of Reactions
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Questions and Answers

Which of the following factors affects the rate of a reaction by altering the frequency of collisions between reactant particles?

  • Surface area
  • Temperature (correct)
  • Concentration
  • Light
  • What is the primary reason why an increase in surface area of a reactant leads to an increase in the rate of reaction?

  • Increased frequency of collisions between reactant particles
  • Increased concentration of reactant particles
  • Decreased activation energy required for the reaction
  • Increased number of active sites for reaction to occur (correct)
  • Which of the following factors is least likely to affect the rate of a reaction involving light?

  • Surface area of reactants (correct)
  • Intensity of light
  • Wavelength of light
  • Concentration of reactants
  • What is the primary way in which the nature of the reactants affects the rate of a reaction?

    <p>By altering the activation energy required for the reaction</p> Signup and view all the answers

    Which of the following statements is true about the effect of concentration on the rate of a reaction?

    <p>Increasing concentration always increases the rate of reaction</p> Signup and view all the answers

    Study Notes

    Factors Affecting Reaction Rate

    • Temperature affects the rate of a reaction by altering the frequency of collisions between reactant particles.
    • An increase in surface area of a reactant leads to an increase in the rate of reaction because more reactant particles are exposed to collide.

    Factors Unrelated to Reaction Rate

    • The presence of light is least likely to affect the rate of a reaction involving light.

    Reactant Nature and Reaction Rate

    • The nature of the reactants affects the rate of a reaction primarily through the ease of bond-breaking and formation.

    Concentration and Reaction Rate

    • An increase in concentration of reactants leads to an increase in the rate of reaction, as more reactant particles are available to collide.

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    Quiz on factors influencing the rate of chemical reactions, including light, temperature, concentration, and surface area.

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