Suppose we compared two reactions, one requiring the...

Name: Problem 44, Chapter 13: Chemistry: The Molecular Nature of Matter
Uploaded: 2021-07-08T18:36:07-08:00
Duration: 1 min 44 s
Channel: Anthony Han
Description: Suppose we compared two reactions, one requiring the simultaneous collision of three molecules and the other requiring a collision between two molecules. From the standpoint of statistics, and all other factors being equal, which reaction should be faster? Explain your answer.

Suppose we compared two reactions, one requiring the simultaneous collision of three molecules and the other requiring a collision between two molecules. From the standpoint of statistics, and all other factors being equal, which reaction should be faster? Explain your answer.

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Key Concepts

Collision Theory

This concept explains that chemical reactions occur when reactant molecules collide with sufficient energy and proper orientation. The frequency of these effective collisions is crucial in determining the reaction rate, and simpler collisions (involving fewer molecules) generally happen more often.

Molecularity

Molecularity refers to the number of reactant molecules participating in an elementary reaction step. Bimolecular processes involve two molecules colliding, while termolecular processes require the simultaneous collision of three molecules. Reactions with lower molecularity typically occur more rapidly because the necessary events are statistically more probable.

Statistical Likelihood

The probability of collisions decreases with the number of molecules that must come together simultaneously. Since three-body collisions are significantly less likely than two-body collisions, the reaction involving the simpler bimolecular collision is statistically faster under similar conditions.

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