Chemical Reaction Engineering Quiz
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Questions and Answers

Which of the following factors does NOT affect the rate of a chemical reaction?

  • Presence of a catalyst
  • Pressure (correct)
  • Concentration of reactants
  • Temperature
  • What is the purpose of a catalyst in a chemical reaction?

  • To decrease the temperature required for the reaction
  • To provide an alternate reaction pathway with lower activation energy (correct)
  • To change the equilibrium constant of the reaction
  • To increase the concentration of reactants
  • What is the order of a chemical reaction with respect to a particular reactant?

  • The exponent to which the concentration of the reactant is raised in the rate equation (correct)
  • The number of moles of the reactant consumed per unit time
  • The ratio of the rate of the reaction to the concentration of the reactant
  • The stoichiometric coefficient of the reactant in the balanced chemical equation
  • Study Notes

    Factors Affecting Chemical Reaction Rate

    • Concentration of reactants affects the rate of a chemical reaction
    • Temperature affects the rate of a chemical reaction
    • Surface area of reactants affects the rate of a chemical reaction
    • Pressure affects the rate of a chemical reaction
    • Presence or absence of light affects the rate of a chemical reaction
    • The rate of a chemical reaction is NOT affected by the color of the reactants

    Catalysts in Chemical Reactions

    • A catalyst is a substance that speeds up a chemical reaction without being consumed by the reaction
    • A catalyst lowers the activation energy required for a chemical reaction to occur
    • A catalyst remains unchanged at the end of a chemical reaction

    Order of a Chemical Reaction

    • The order of a chemical reaction with respect to a particular reactant is the power to which the concentration of the reactant is raised in the rate equation
    • A first-order reaction is one in which the rate of reaction is directly proportional to the concentration of the reactant
    • A second-order reaction is one in which the rate of reaction is proportional to the square of the concentration of the reactant

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    Description

    Test your knowledge of chemical reaction engineering with this quiz! Learn about the factors that do not affect the rate of a reaction, the purpose of a catalyst, and the order of a reaction with respect to a reactant.

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