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Questions and Answers
Which of the following factors does NOT affect the rate of a chemical reaction?
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?
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?
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.
