Multiple Choice
Which statement best describes how increasing temperature affects the rate of a chemical reaction?
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15. Chemical Kinetics
Factors Influencing Rates
Multiple Choice
Which of the following actions would most likely increase the rate of a chemical reaction?
A
Removing a catalyst
B
Reducing the surface area of a solid reactant
C
Decreasing the temperature
D
Increasing the concentration of reactants
Verified step by step guidance1
Understand that the rate of a chemical reaction depends on factors such as concentration, temperature, surface area, and the presence of a catalyst.
Recall that increasing the concentration of reactants generally increases the frequency of collisions between reactant molecules, which can increase the reaction rate.
Recognize that removing a catalyst would decrease the reaction rate because catalysts lower the activation energy and speed up reactions.
Know that reducing the surface area of a solid reactant decreases the available area for collisions, thus slowing down the reaction.
Understand that decreasing the temperature reduces the kinetic energy of molecules, leading to fewer effective collisions and a slower reaction rate.
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