CHEM 123

UBC

Course Overview

Lessons & Practice

I. Welcome

3. Entropy, Gibbs Free Energy

2.2hr

3.1.1. 2nd Law of Thermodynamics (Entropy)6 min

3.1.2. Factors Affecting Entropy Changes 10 min

3.1.3. Example1 min

3.1.4. Practice1 min

3.1.5. Practice4 min

3.2.1. Additional Equations for Entropy

3.2.2. Example: Entropy Calculation3 min

3.2.3. Example: Entropy Calculation9 min

3.3.1. 3rd Law of Thermodynamics1 min

3.3.2. Summary of the Laws of Thermodynamics

3.4.1. Gibbs Free Energy and Spontaneity2 min

3.4.2. Spontaneity 7 min

3.4.3. Example: Spontaneity of a Reaction

3.4.4. Predicting Spontaneity Based off Entropy2 min

3.5.1. Introduction to Equilibrium 2 min

3.5.2. Understanding Equilibrium3 min

3.6.1. Concentration vs Time Graphs4 min

3.6.2. Practice3 min

3.6.3. Practice6 min

3.7.1. Equilibrium Constant (K)10 min

3.7.2. The Magnitude of the Equilibrium Constant, K8 min

3.7.3. Practice2 min

3.7.4. Practice4 min

3.8.1. Manipulating Equilibrium Constants5 min

3.8.2. Practice7 min

3.9.1. Predicting Equilibria: The Reaction Quotient (Q) 6 min

3.9.2. Example4 min

3.9.3. Practice3 min

3.9.4. Practice

3.10.1. Chemical Equilibrium and ΔG Equations5 min

3.10.2. DeltaGo and K 3 min

3.10.3. Example

3.10.4. Chemical Equilibrium and ΔG Practice

3.10.5. Chemical Equilibrium and ΔG Practice #2

3.10.6. Chemical Equilibrium and ΔG Practice #3

3.10.7. Van't Hoff Practice Problem

4. Kinetics

2.4hr

4.1.1. Introduction to Kinetics1 min

4.2.1. Reaction Rates 3 min

4.2.2. Measuring Reaction Rates4 min

4.2.3. Practice: Rate of Reaction6 min

4.2.4. Practice: Rate of Reaction5 min

4.3.1. Rate Laws2 min

4.3.2. Example: Determining Reaction Order44 sec

4.3.3. Determining the Rate Law From Experimental Data 10 min

4.3.4. Shortcut to Find Units of k Quicker 3 min

4.3.5. Practice: Experimental Rate Law 6 min

4.3.6. Practice: Determining Rate Law Exponents

4.3.7. Practice: Rate Law1 min

4.3.8. Practice: Units of the Rate Constant, K5 min

4.4.1. Integrated Rate Laws for Various Orders 7 min

4.4.2. Example: Plotting a Straight Line with the Integrated Rate Laws

4.4.3. Practice: Integrated Rate Laws Practice

4.4.4. Integrated Rate Laws Cheatsheet

4.4.5. First Order Reactions

4.4.6. Second Order Reactions

4.5.1. Half-life for Various Orders 4 min

4.5.2. Practice: Half-Life

4.5.3. Practice: Radioactive Decay in Smoke Detectors1 min

4.6.1. Arrhenius Equation1 min

4.6.2. Example: Arrhenius Equation

4.6.3. Example: Arrhenius Equation1 min

4.6.4. Practice: Arrhenius Equation

4.7.1. How Do We Measure Ea39 sec

4.7.2. Practice: Determining the Activation Energy39 sec

4.8.1. 3 Neccessary Steps For a Reaction to Occur 1 min

4.8.2. Collision Theory7 min

4.8.3. Collision Theory Represented By A Graph2 min

4.8.4. Transition State Theory 4 min

4.8.5. Additional Notes on the Arrhenius Equation 9 min

4.9.1. Reactions Mechanisms – Elementary Reactions4 min

4.9.2. Example: Reactions Mechanisms – Elementary Steps

4.9.3. Rate Determining Step Introduction 5 min

4.9.4. Example: Rate Determining Step14 min

4.9.5. Practice: Rate of A Reaction

4.9.6. Practice: Reaction Coordinate Diagram4 min

4.9.7. Practice: Mechanism

4.10.1. Catalysts3 min

4.10.2. Enzymes4 min

4.10.3. Example: Identifying a Catalyst Vs an Intermediate In a Mechanism 2 min

4.10.4. Example: Catalysts 224 sec

4.11.1. Steady State Approximation

4.11.2. Example: Steady State Approximation 11 min

4.12.1. Pre-Equilibrium4 min

4.12.2. Practice: Pre-Equilibrium

5. Organic Review

1.4hr

5.1.1. What is Organic Chemistry?

5.1.2. 5 Ways to Represent Alkane Structures5 min

5.1.3. Line Bond Drawing6 min

5.1.4. A Closer Look at Line Drawings

5.2.1. Introduction to Hydrocarbons7 min

5.2.2. Cyclic Hydrocarbons56 sec

5.2.3. Hydrocarbons2 min

5.3.1. Introduction to Functional Groups 12 min

5.3.2. Functional Groups3 min

5.3.5. Practice

5.3.6. Practice

5.3.7. Practice3 min

5.3.8. Functional Groups Cheatsheet

5.4.1. Properties of Hydrocarbons10 min

5.4.2. Summary of Properties (Polarity)2 min

5.4.3. Practice

5.5.1. Naming Simple Hydrocarbons4 min

5.5.2. Nomenclature Cheatsheet

5.5.4. Example2 min

5.5.5. Practice

5.5.6. Practice

5.6.1. Functional Groups12 min

5.6.2. Steps to Naming Complex Organic Molecules4 min

5.6.3. Naming Organic Molecules with Odd Functional Groups2 min

5.6.5. Practice

5.6.6. Practice

5.6.7. Functional Group Parent Names Cheatsheet

5.7.1. Drawing Organic Compouds in 2D2 min

5.7.2. Example: 2-D Notation2 min

5.7.3. Example: 2-D Notation1 min

5.7.4. Summary Sheet: Representing Molecules in Different 2D Notation

5.7.5. Summary Sheet: Condensed Formula

6. Organic Acid/Base Chemistry

56min

6.1.1. Acid/Base Equilibrium Fundamentals - Use of Acids and Bases in Organic Chemistry4 min

6.1.2. Key Definitions in Acids/Bases5 min

6.1.3. Acid/Base Equilibrium Constants2 min

6.1.4. Example: Acid/Base Arrows 3 min

6.2.1. Factors Influencing Acid/Base Strength2 min

6.2.2. Electronegativity1 min

6.2.3. Atom Size2 min

6.2.4. Resonance3 min

6.2.5. Hybridization3 min

6.2.6. Induction3 min

6.2.7. Aromaticity3 min

6.2.8. Example: Acid/Base Strength 3 min

6.2.9. Example: Acid/Base Strength 3 min

6.2.10. Practice: Acid/Base Equilibria 2 min

6.2.11. Practice: Acid/Base Equilibria 2 min

6.3.1. Important pKas You Should Know4 min

6.3.2. Relationship Between pH and pKa2 min

6.3.3. Amino Acids at Different pHs3 min

6.3.4. Practice: Amino Acids in Solution3 min

6.3.5. Practice: Amino Acids in Solution3 min

6.3.6. Summary Sheet: Amino Acids in Solution of Various pH

6.3.7. Summary Sheet: pKa's of Common Molecules

6.4.1. Summary Sheet: Chemical Equilibria and Acid/Base Chemistry

6.Q. Checkpoint Quiz15 Qns

7. Conformations and Cyclohexane

34min

7.1.1. Chair Conformations4 min

7.1.2. Example: Chair Conformations60 sec

7.1.3. Example: Chair Conformations1 min

7.1.4. Practice: Chair Conformations2 min

7.2.1. IUPAC Systematic Naming Theory15 min

7.2.2. Example: Converting Names to Structures2 min

7.2.3. Example: IUPAC Systematic Naming2 min

7.2.4. Example: IUPAC Systematic Naming2 min

7.2.5. Practice: IUPAC Systematic Naming2 min

7.2.6. Practice: IUPAC Systematic Naming2 min

7.2.7. Summary Sheet: IUPAC Naming

8. E/Z and R/S, Chirality, Fischer Projections

1.8hr

8.1.1. Summary Sheet: Isomers Flowchart

8.2.1. Constitutional Isomers5 min

8.2.2. Example: Constitutional Isomers4 min

8.2.3. Example: Constitutional Isomers3 min

8.3.1. Conformational Isomers6 min

8.3.2. Example: Conformational Isomers3 min

8.4.1. Geometric or Cis/Trans Isomers6 min

8.4.2. Example: Geometric Isomers4 min

8.4.3. Practice: Geometric Isomers 2 min

8.5.1. Chiral Molecules5 min

8.5.2. Cahn-Ingold-Prelog Rules4 min

8.5.3. Assigning R and S Nomenclature4 min

8.5.4. Example: Stereochemistry7 min

8.5.5. Example: Stereochemistry 24 min

8.5.6. Practice: Stereochemistry 2 min

8.5.7. Practice: Stereochemistry1 min

8.6.1. Optical Isomers13 min

8.6.2. Example: Optical Isomers3 min

8.6.3. Example: Optical Isomers 23 min

8.6.4. Practice: Optical Isomers 1 min

8.7.1. Converting Fischer Structures4 min

8.7.2. Example: Converting Fischer Structures3 min

8.7.3. Example: Converting Fischer Structures3 min

8.7.4. Practice Question: Converting Fischer Projections2 min

8.8.1. Drawing Organic Compounds in 3D5 min

8.8.2. Example: 3-D Notation2 min

8.8.3. Example: 3-D Notation2 min

8.8.4. Summary Sheet: Drawing in 3-Dimensions

8.9.1. Summary Sheet: IUPAC Naming

8.9.2. Summary Sheet: Naming Molecules with Stereochemistry

8.9.3. Example: Naming Molecules with Stereochemistry4 min

8.9.4. Example: Naming Molecules with Stereochemistry2 min

8.9.5. Practice: Naming Molecules with Stereochemistry2 min

8.10.1. Summary Sheet: Stereochemistry

8.10.2. Summary Sheet: Determining Maximum Number of Stereoisomers

8.10.3. Summary Sheet: Nomenclature and Conformations of Alkanes and Cycloalkanes

8.Q. Checkpoint Quiz10 Qns

9. Substitution Reactions

48min

9.1.1. General Terminology4 min

9.1.2. Nucleophiles4 min

9.1.3. Electrophiles2 min

9.1.4. Leaving Groups4 min

9.1.5. Substitution vs. Elimination2 min

9.1.6. Example: Substitution vs. Elimination3 min

9.2.1. Molecularity and Rate57 sec

9.2.2. Structural Requirements1 min

9.2.3. SN1 Mechanism4 min

9.2.4. Practice: Sn1 Reaction1 min

9.3.1. Molecularity and Rate1 min

9.3.2. Structural Requirements2 min

9.3.3. SN2 Mechanism4 min

9.3.4. Practice: Sn2 Reaction1 min

9.4.1. Stereochemistry in Substitution Reactions2 min

9.5.1. Leaving Group Ability4 min

9.5.2. Example: Alcohol as a Leaving Group2 min

9.6.1. Solvent Effects in Substitution Reactions6 min

9.7.1. Summary Sheet: Substitution Reactions

9.7.2. Summary Sheet: Elimination Reactions

9.Q. Checkpoint Quiz13 Qns

9.P.1. Practice: Substitution Question 1

9.P.2. Practice: Substitution Question 2

Mock Exams

ME.1. Midterm 1 Exam - Mock Assessment29 Qns

ME.2. Midterm 2 Exam - Mock Assessment21 Qns

ME.3. Final Exam - Mock Assessment80 Qns

CHEM 123 Flashcards

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System

Reactants and products involved in a chemical reaction.

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