Multiple Choice
Which of the following factors affects the rate of diffusion?
15. Chemical Kinetics
Factors Influencing Rates
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Which of the following is not a factor that influences the rate of a chemical reaction?
A
Temperature
B
Presence of a catalyst
C
Concentration of reactants
D
Color of the reactants
Verified step by step guidance1
Identify the factors that typically influence the rate of a chemical reaction. These include temperature, presence of a catalyst, concentration of reactants, and surface area of reactants.
Understand that temperature affects reaction rates because increasing temperature generally increases the kinetic energy of the molecules, leading to more frequent and energetic collisions.
Recognize that the presence of a catalyst provides an alternative reaction pathway with a lower activation energy, thus increasing the reaction rate without being consumed in the process.
Acknowledge that the concentration of reactants influences the rate of reaction because a higher concentration means more reactant particles are available to collide and react.
Consider the color of the reactants. While it may be an observable property, it does not directly affect the rate of a chemical reaction. Therefore, it is not a factor influencing reaction rate.
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