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CHEM 123

UWaterloo

Course Overview

Lessons & Practice

I. Welcome

1. Energy, Entropy, and Spontaneous Changes

3hr

1.1.1. Thermodynamics4 min

1.1.2. State Variables 3 min

1.1.3. Example2 min

1.1.4. Extensive vs Intensive Properties 2 min

1.1.5. Additional Terminology5 min

1.2.1. 0th Law of Thermodynamics 3 min

1.3.1. The 1st Law of Thermodynamics7 min

1.3.2. Signs of Heat and Work & Calculating Work4 min

1.3.3. Example5 min

1.3.4. Practice1 min

1.3.5. Practice3 min

1.4.1. Expansion Due to Chemical Reaction8 min

1.4.2. Example4 min

1.4.3. Practice2 min

1.5.1. Calorimetry12 min

1.5.2. Heat Capacity of Ideal Gases2 min

1.5.3. Practice3 min

1.5.4. Practice

1.6.1. Heat Capacity and Calorimetry13 min

1.6.2. Example7 min

1.6.3. Example6 min

1.6.4. Practice56 sec

1.6.5. Practice10 min

1.6.6. Example7 min

1.6.7. Practice

1.7.1. Enthalpy of Reaction2 min

1.7.2. Example4 min

1.8.1. Heats of Formation6 min

1.8.3. Practice

1.8.4. Practice

1.9.1. Bond Energies4 min

1.9.3. Practice

1.10.1. Hess’ Law5 min

1.10.2. Practice

1.10.3. Practice [challenging]1 min

1.11.1. 2nd Law of Thermodynamics (Entropy)6 min

1.11.2. Factors Affecting Entropy Changes 10 min

1.11.3. Example1 min

1.11.4. Practice1 min

1.11.5. Practice4 min

1.11.6. Additional Equations for Entropy

1.11.7. Example: Entropy Calculation3 min

1.11.8. Example: Entropy Calculation9 min

1.12.1. 3rd Law of Thermodynamics1 min

1.12.2. Summary of the Laws of Thermodynamics

1.13.1. Gibbs Free Energy and Spontaneity2 min

1.13.2. Spontaneity 7 min

1.13.3. Example: Spontaneity of a Reaction

1.13.4. Predicting Spontaneity Based off Entropy2 min

2. Chemical Kinetics

2.3hr

2.1.1. Introduction to Kinetics1 min

2.2.1. Reaction Rates 3 min

2.2.2. Measuring Reaction Rates4 min

2.2.3. Practice: Rate of Reaction6 min

2.2.4. Practice: Rate of Reaction5 min

2.3.1. Rate Laws2 min

2.3.2. Example: Determining Reaction Order44 sec

2.3.3. Determining the Rate Law From Experimental Data 10 min

2.3.4. Shortcut to Find Units of k Quicker 3 min

2.3.5. Practice: Experimental Rate Law 6 min

2.3.6. Practice: Determining Rate Law Exponents

2.3.7. Practice: Rate Law1 min

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

2.4.1. Integrated Rate Laws for Various Orders 7 min

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

2.4.3. Practice: Integrated Rate Laws Practice

2.4.4. Integrated Rate Laws Cheatsheet

2.4.5. First Order Reactions

2.4.6. Second Order Reactions

2.5.1. Half-life for Various Orders 4 min

2.5.2. Practice: Half-Life

2.5.3. Practice: Radioactive Decay in Smoke Detectors1 min

2.6.1. Arrhenius Equation1 min

2.6.2. Example: Arrhenius Equation

2.6.3. Example: Arrhenius Equation1 min

2.6.4. Practice: Arrhenius Equation

2.7.1. How Do We Measure Ea39 sec

2.7.2. Practice: Determining the Activation Energy39 sec

2.8.1. 3 Neccessary Steps For a Reaction to Occur 1 min

2.8.2. Collision Theory7 min

2.8.3. Collision Theory Represented By A Graph2 min

2.8.4. Transition State Theory 4 min

2.8.5. Additional Notes on the Arrhenius Equation 9 min

2.9.1. Reactions Mechanisms – Elementary Reactions4 min

2.9.2. Example: Reactions Mechanisms – Elementary Steps

2.9.3. Rate Determining Step Introduction 5 min

2.9.4. Example: Rate Determining Step14 min

2.9.5. Practice: Rate of A Reaction

2.9.6. Practice: Reaction Coordinate Diagram4 min

2.9.7. Practice: Mechanism

2.10.1. Steady State Approximation

2.10.2. Example: Steady State Approximation 11 min

2.10.3. Pre-Equilibrium4 min

2.10.4. Practice: Pre-Equilibrium

2.11.1. Catalysts3 min

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

2.11.3. Example: Catalysts 224 sec

3. Equilibrium

2.4hr

3.I. Chapter Intro3 min

3.1.1. Introduction to Equilibrium 2 min

3.1.2. Understanding Equilibrium3 min

3.2.1. Concentration vs Time Graphs4 min

3.2.2. Practice3 min

3.2.3. Practice6 min

3.3.1. Equilibrium Constant (K)10 min

3.3.2. The Magnitude of the Equilibrium Constant, K8 min

3.3.3. Practice2 min

3.3.4. Practice4 min

3.4.1. Manipulating Equilibrium Constants5 min

3.4.2. Practice7 min

3.5.1. Solving for Kc vs Kp 5 min

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

3.6.2. Example4 min

3.6.3. Practice3 min

3.6.4. Practice

3.7.1. Le Chatelier's Priniciple14 min

3.7.2. Practice6 min

3.7.3. Practice

3.8.1. Intro to ICE Tables

3.8.2. Example 19 min

3.8.3. Example 29 min

3.8.4. Example 33 min

3.8.5. Example 49 min

3.8.6. Example 512 min

3.9.1. Chemical Equilibrium and ΔG Equations5 min

3.9.2. DeltaGo and K 3 min

3.9.4. Chemical Equilibrium and ΔG Practice

3.9.5. Chemical Equilibrium and ΔG Practice #2

3.9.6. Chemical Equilibrium and ΔG Practice #3

3.9.7. Van't Hoff Practice Problem

3.Q. Exam Practise & Problems9 Qns

4. Acids and Bases

6hr

4.I. Chapter Intro4 min

4.1.1. Definitions of Acids and Bases 10 min

4.2.1. Identifying Conjugate Acid and Base Pairs 7 min

4.2.2. Practice2 min

4.3.1. pH Scale 7 min

4.3.2. Example2 min

4.3.3. Example6 min

4.3.4. Practice

4.4.1. Acids and their Equations7 min

4.4.2. Practice4 min

4.4.3. Acids With Different Numbers of Protons5 min

4.5.1. Bases and their Equations6 min

4.6.2. Example21 min

4.6.3. Types of Acid or Base Reactions and pH Calculations Summary

4.7.1. Autoionization of Water (Kw) 6 min

4.7.2. Practice

4.7.3. Example2 min

4.7.4. Example6 min

4.7.5. pH Scale 7 min

4.8.1. Percent Ionization or Dissociation2 min

4.8.2. Example7 min

4.9.1. Acid Base Equations Cheatsheet

4.9.2. Acid/Base Important Relationships Cheatsheet

4.10.1. Relationships Between the Strength of an Acid/Base and its Conjugate Base/Acid5 min

4.10.2. How to Determine the Stronger Acid by Looking at Conjugate Bases14 min

4.10.3. Acidity of Oxyacids4 min

4.11.1. Acidic, Basic, and Neutral Salts 8 min

4.11.2. Salts (Cntd.)3 min

4.11.3. Example1 min

4.11.4. Example5 min

4.11.5. Practice

4.11.6. Salts Cheatsheet

4.12.1. Factors that Affect Solubility2 min

4.12.2. Common-ion Effect Introduction4 min

4.12.3. Common-ion Effect Problem 7 min

4.12.4. common-ion effect

4.13.1. Strong Base + Strong Acid Reactions3 min

4.13.2. Strong Base + Weak Acid Reactions4 min

4.13.3. Weak Base + Strong Acid Reactions3 min

4.13.4. Practice9 min

4.14.1. Introduction to Buffers6 min

4.14.2. Buffers Problem Type 16 min

4.14.3. Example3 min

4.14.4. Buffers Problem Type 22 min

4.14.5. Example6 min

4.14.6. Buffers Problem Type 32 min

4.14.7. Example6 min

4.14.8. Practice

4.14.9. Forming Buffers6 min

4.14.10. Example2 min

4.14.11. Example4 min

4.14.12. Effective Buffer Range5 min

4.14.13. Practice2 min

4.14.14. Example5 min

4.15.1. Introduction to Titrations 5 min

4.15.2. Labeling a Titration Curve9 min

4.15.3. Titration Curves17 min

4.15.4. Practice

4.15.5. Example (Challenging)19 min

4.15.6. Example (Challenging)37 min

4.16.1. Indicators8 min

4.16.2. Practice

5. Electrochemistry

3hr

5.1.1. Oxidation States7 min

5.1.2. Oxidation States - Additional Information5 min

5.1.3. Example3 min

5.1.4. Practice

5.1.5. Practice

5.2.1. Redox Reactions Theory8 min

5.2.2. Practice3 min

5.2.3. Practice49 sec

5.2.4. Practice

5.3.1. Balancing Redox Reactions-Half Reaction Method 18 min

5.3.2. Practice

5.4.1. Reduction Potentials 10 min

5.4.2. How Potentials Relate to Spontaneity 7 min

5.4.3. Example: Electrochemical Cell Practice 4 min

5.4.4. Practice: Strongest Reducing Agent3 min

5.5.1. Galvanic/Voltaic Cells13 min

5.5.2. Practice: Galvanic Cells44 sec

5.5.3. Practice: Galvanic Cells 5 min

5.5.4. Example: Will A Reaction Occur? 10 min

5.5.5. Example: Electrochemistry2 min

5.5.6. Practice: Electrochemistry2 min

5.6.1. Cell Diagram 2 min

5.6.2. Practice: Cell Diagram For An Electrochemical Cell

5.6.3. Practice: Electrochemical Cells6 min

5.7.1. Cell Potential Equations 2 min

5.7.2. Example: Solving for Keq and deltaGo 5 min

5.7.3. Practice: Electrochemistry II3 min

5.7.4. Electrochemical Cells in Non-standard Conditions: Nernst Equation1 min

5.7.5. Example: Electrochemical Cell Practice with Equations11 min

5.7.6. Practice: Electrochemistry Equations

5.8.1. Types of Batteries 8 min

5.8.2. Rechargeable Batteries 13 min

5.8.3. Corrosion and Prevention11 min

5.8.4. Concentration Cells 15 min

5.9.1. Electrolytic Cells7 min

5.9.2. Faraday's Law of Electrolysis 5 min

5.9.3. Summary of Galvanic Vs Electrolytic Cell

5.9.4. G, E, and K Summary

CHEM 123 Flashcards

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Atoms

Atoms are the building blocks of chemistry and life, making up everything around us.

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