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Objective: To identify the variables that affect reaction rate and to explain the effects using the Collision Model of reaction rates.
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Reaction Rates and the Collision Model
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Reaction Rates
6 Questions
To identify the variables affecting reaction and the manner in which changes in a variable affect the reaction rate.
Pick from among the three activities - Reaction Rates,
The Collision Model, and Energy and Orientation.
The Collision Model
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The Collision Model
6 Questions
To utilize the Collision Model of reaction rates to explain why a variable increases or decrease reaction rate.
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Energy and Orientation
Completed
Energy and Orientation
6 Questions
To use concepts of activation energy and orientation of particles during a collision to explain relative rates of reaction.
Reaction Rates
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the Energy and Orientation.
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the The Collision Model.
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Middlest Rate
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Lowest Rate
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Consider the four different variable changes made below. Identify any change that would not increase the reaction rate. Select all that apply.
Reactions occur more rapidly at higher temperatures. Which two statements best explain why increasing temperatures increase reaction rates? Pick two statements.
The energy profile for reactants turning into products is shown. The activation energy (Ea) for this reaction is _____________ kJ/mol.
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A reaction can take place by two different mechanisms or pathways - referred to as Pathway A and Pathway B. The energy profile for each pathway is shown. When comparing Pathway A to Pathway B, one would conclude that ...
A. ... the number of particles whose KE exceeds the activation energy is
B. ... the temperature is greatest in
C. ... the reaction will occur at a
greater rate in
Not every particle in a sample has the same kinetic energy (KE). There is a distribution of KE values within the sample. These graphs are KE distribution curves for two samples - Sample A and Sample B - of the same reactants at two different temperatures. The activation energy (Ea) is marked on the graph. When comparing the curves for the two samples, one can conclude that ...