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Organic Chemistry: Structure, Bonding, Acids & Bases, and Alkanes

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Functional Groups

  • Assigning Degrees to Alkyl Halides
    01:30
  • Why we need functional groups.
    01:49
  • The difference between aldehydes and ketones.
    03:08

Acid and Base Definitions

  • Lewis vs. Bronsted-Lowry Definition
    07:46
  • The Bronsted-Lowry definition of acids and bases.
    00:54
  • Equilibrium constant and conjugates.
    02:11

Equilibrium Constant and pKa

  • The pH scale vs. the pKa scale.
    02:15
  • The relationship between equilibrium constant and pKa.
    02:19
  • Why we use pKa instead of pH.
    01:46

pKa Values

  • Identifying pKa values
    07:45
  • The 12 pKa values you want to memorize (because they are important!).
    09:36

Factors Affecting Acidity

  • Which of the oxides is the most basic?
    00:30
  • The 3 factors that determine the strength of inductive effects.
    03:09
  • Using Inductive Effect to determine acidity
    01:54

Bonding Preferences

  • What is the difference between valence and octet electrons?
    02:04
  • Understanding the hydrogen isotopes.
    08:32
  • What is a valence electron?
    02:14

Formal Charges

  • Calculate the formal charges of ALL atoms.
    02:21
  • Calculating formal and net charge.
    01:34

Lewis Structure

  • Drawing the Lewis Structure for N2H4.
    04:12
  • How to use Organic Chemistry to make Lewis Structures easier.
    03:49

Skeletal Structure

  • How bondline is different from Lewis Structures.
    04:03
  • Conversion of ethanol from electron dot to bondline
    01:50

Constitutional Isomers

  • Isomeric Relationships
    03:28
  • Using the flowchart to determine isometric relationships.
    05:02
  • Isomeric Relationships
    02:56

Resonance Structures

  • How to draw a resonance hybrid.
    03:24
  • The rules you need for resonance:
    03:34
  • How to determine which structure is most stable.
    01:32

Hybridization

  • How carbon creates 4 partially-filled orbitals.
    02:53
  • Bond sites, hybridization, and intermediate orbitals
    04:58
  • Introduction to the reactive intermediates.
    02:47

Molecular Geometry

  • Predict the hybridization and molecular geometry
    01:54
  • Molecular Geometry Explained.
    07:44

Electronegativity

  • Differences between ionic, polar and covalent bonds
    11:33

Overview of Chemical Reactions

  • Recognizing Substitution Reactions.
    01:34
  • Recognizing Acid-Base Reactions.
    02:43
  • Recognizing Elimination Reactions.
    00:40

Reaction Mechanism

  • How to tell if charged molecules will react as nucleophiles or electrophiles.
    02:39
  • Nucleophile or Electrophile
    01:49
  • How to tell if uncharged molecules will react as nucleophiles or electrophiles.
    02:48

Energy Diagram

  • Favorability and rate of Free Energy Diagrams
    01:14
  • Favorability and rate of Free Energy Diagrams
    00:34
  • Favorability and rate of Free Energy Diagrams
    02:18

Gibbs Free Energy

  • Intermediates vs. Transition States
    06:55
  • Breaking down the different terms of the Gibbs Free Energy equation.
    05:02

Enthalpy

  • How to calculate enthalpy using bond dissociation energies.
    04:09
  • Calculating Enthalpies
    04:38

Entropy

  • 3 ways to increase entropy.
    07:11
  • Explaining what entropy is.
    02:46

Radical Initiators

  • What are Radical Initiators?
    03:49
  • Heterolytic vs. Homolytic Bond Cleavage .
    04:39

Radical Stability

  • The radical stability trend.
    03:43
  • Determine which of the following radicals is the most stable.
    03:25

Radical Chain Reaction

  • The one reaction that alkanes will actually undergo.
    02:05
  • Explaining the following problem.
    00:34
  • Show the entire chain reaction mechanism.
    04:08

Radical Selectivity

  • Predict the Product.
    00:48
  • Predict the Product.
    01:02
  • Using the Hammond Postulate to describe radical chlorination.
    03:03

Hammond Postulate

  • Defining the Hammond Postulate.
    01:30
  • Bromination explains the Hammond Postulate.
    02:58
  • Chlorination explains the Hammond Postulate.
    05:23

Types of Isomers

  • Determining when molecules are conformers.
    01:39
  • Determining when molecules are different.
    03:51
  • Determining when molecules are constitutional isomers.
    01:33

Conformational Isomers

  • Understanding what a conformer is.
    03:29

Newman Projections

  • How to draw a Newman Projection Energy Diagram.
    07:27
  • How sigma bond rotation is visualized
    03:11
  • The energy states of 3 different Newman Projections.
    03:51

Drawing Newman Projections

  • Step 6 to Drawing Newman Projections
    01:31
  • Step 5 to Drawing Newman Projections
    01:51
  • Step 3 to Drawing Newman Projections
    00:28

Barrier To Rotation

  • 4 Values You Should Memorize
    02:54
  • Determining energy cost of eclipsed interaction
    03:00

Ring Strain

  • Understanding Heat of Combustion
    01:11
  • What is torsional strain?
    02:00
  • Lowest Heat of Combustion
    02:34

Axial vs Equatorial

  • What is a chair conformation?
    01:05
  • How chairs flip from one conformation to another
    02:22
  • How chairs flip from one conformation to another
    04:26

Cis vs Trans Conformations

  • Is the following cyclohexane cis or trans?
    00:44
  • How to draw chairs.
    01:18
  • Is the following cyclohexane cis or trans?
    00:27

Chair Flip

  • The 3 important factors when drawing chairs
    05:12

Equatorial Preference

  • Equatorial Preference
    04:02
  • Draw the following chair in the most stable conformation.
    03:17

Calculating Energy Difference Between Chair Conformations

  • Explaining how A-Values are related to cyclohexane flip energy
    09:00

A-Values

  • Calculating Chair Equilibrium
    06:27