ap chemistry - unit 5: mechanisms & catalysts

timestamps

• 0:00

  Collision Model Introduction

• 0:32

  Collision Energy and Orientation

• 1:04

  Activation Energy Explained

• 1:34

  Reaction Energy Graphs

• 2:06

  Exothermic and Endothermic Reactions

• 2:37

  Catalyst Effects

• 3:09

  Reaction Mechanisms Overview

• 3:41

  Rate Law Determination Methods

• 4:45

  Mechanisms and Rate Laws

• 5:16

  Intermediates in Mechanisms

• 5:48

  Elementary Steps

• 6:19

  Unimolecular Reactions

• 6:49

  Bimolecular Reactions

• 7:21

  Rate Laws from Molecularity

• 7:54

  Rate-Determining Step

• 8:24

  Steady State Approximation

• 8:56

  Overall Rate Calculation

• 9:29

  Validating Reaction Mechanisms

• 10:01

  Mechanism Requirements

• 10:32

  Summing Elementary Steps

• 11:03

  Overall Reaction Check

• 11:37

  Experimental Rate Matching

• 12:09

  Proposing Mechanisms

• 12:41

  Accepted Mechanisms

• 13:12

  Multi-Step Energy Profile

• 13:44

  Activation Energy in Steps

• 14:15

  Catalyst on Transition State

• 14:46

  Catalyst Lowers Energy Barrier

• 15:17

  Intermediate Energy Levels

• 15:49

  NO2 and F2 Example

• 16:19

  Proposed Mechanism Analysis

• 16:51

  Identifying Intermediates

• 17:22

  Mechanism Validity Check

• 17:53

  Rate Law Verification

• 18:27

  NO and O2 Example

• 19:00

  Equilibrium in Mechanism

• 19:31

  Summing Steps

• 20:03

  Substituting Intermediates

• 20:34

  Equilibrium Rate Assumption

• 21:06

  Solving for Intermediate

• 21:39

  Rate Law Substitution

• 22:13

  Energy Profile Example

• 22:43

  NO2 and CO Reaction

• 23:13

  Rate Law Statement

• 23:45

  Intermediate Identification

• 24:16

  Slow Step Analysis

• 24:48

  Equilibrium Substitution