In terms of the kinetic theory, why does an increase in temperature increase the reaction rate?

Name: Problem 32, Chapter 13: Chemistry: The Molecular Nature of Matter
Uploaded: 2021-07-08T18:27:35-08:00
Duration: 1 min 59 s
Channel: Anthony Han
Description: In terms of the kinetic theory, why does an increase in temperature increase the reaction rate?

step 1 So increasing the temperature is best expressed for molecules by drawing a Maxwell Boltzman dist

In terms of the kinetic theory, why does an increase in...

Key Concepts

Activation Energy

Activation energy is the minimum energy barrier that must be overcome for reactants to form products. As temperature rises, more molecules achieve or exceed this activation energy due to their increased kinetic energies. Therefore, higher temperatures result in a greater number of effective collisions, ultimately leading to an accelerated reaction rate.

Maxwell-Boltzmann Distribution

The Maxwell-Boltzmann distribution describes the spread of kinetic energies among the molecules in a sample. At higher temperatures, the distribution spreads out such that a larger fraction of molecules possess energies higher than the activation energy required for the reaction. This increase in the proportion of high-energy collisions contributes significantly to the acceleration of the reaction rate.

Collision Theory

Collision theory explains that for a chemical reaction to proceed, reacting particles must collide with sufficient energy and proper orientation. An increase in temperature leads to a higher frequency of collisions, as molecules move more rapidly. Moreover, more of these collisions occur with enough energy to initiate a reaction, thus increasing the reaction rate.

Temperature and Molecular Kinetic Energy

Temperature is directly related to the average kinetic energy of the molecules in a system. As temperature increases, the molecules move faster, which means their kinetic energies are higher. This increased energy makes the collisions between molecules more energetic, thereby enhancing the possibility of overcoming energy barriers required for a reaction to occur.

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