Канал: CHEM1142

Week 13 - 17. Aluminum - the most precious of metals?!

Week 13 - 17. Aluminum - the most precious of metals?!

Week 13 - 16. Making aluminum via electrolysis

Week 13 - 16. Making aluminum via electrolysis

Week 13 - 15. Stoichiometry of electrolysis (part two)

Week 13 - 15. Stoichiometry of electrolysis (part two)

Week 13 - 14. Stoichiometry of electrolysis

Week 13 - 14. Stoichiometry of electrolysis

Week 13 - 13. Electrolysis

Week 13 - 13. Electrolysis

Week 13 - 12. A modified Nernst eq using base-10 logarithms

Week 13 - 12. A modified Nernst eq using base-10 logarithms

Week 13 - 11. The Nernst equation - how cell voltage changes with concentration

Week 13 - 11. The Nernst equation - how cell voltage changes with concentration

Week 13 - 10. Calculating an equilibrium constant, K, from cell potential!

Week 13 - 10. Calculating an equilibrium constant, K, from cell potential!

Week 13 - 9. Connecting the dots: the links between equilibria, thermodynamics, and cell voltage!

Week 13 - 9. Connecting the dots: the links between equilibria, thermodynamics, and cell voltage!

Week 13 - 8. Connecting the worlds of thermodynamics and electrochemistry!

Week 13 - 8. Connecting the worlds of thermodynamics and electrochemistry!

Week 13 - 7. A practice electrochemical cell problem for you

Week 13 - 7. A practice electrochemical cell problem for you

Week 13 - 6. Electrochemical cells - putting it all together!

Week 13 - 6. Electrochemical cells - putting it all together!

Week 13 - 5. What are electrode potentials telling us?

Week 13 - 5. What are electrode potentials telling us?

Week 13 - 4. Using standard electrode potentials

Week 13 - 4. Using standard electrode potentials

Week 13 - 3. Standard electrode potentials

Week 13 - 3. Standard electrode potentials

Week 13 - 2. Going from electrochemical cell notation to a cell diagram

Week 13 - 2. Going from electrochemical cell notation to a cell diagram

Week 13 - 1. An introduction to electrochemical cell notation

Week 13 - 1. An introduction to electrochemical cell notation

Week 12 - 11. An introduction to galvanic (or voltaic) cells

Week 12 - 11. An introduction to galvanic (or voltaic) cells

Week 12 - 10. A sample redox equation to balance

Week 12 - 10. A sample redox equation to balance

Week 12 - 9. Balancing redox equations using the half-reaction approach

Week 12 - 9. Balancing redox equations using the half-reaction approach

Week 12 - 8. Another way to assign oxidation numbers from Lewis structures

Week 12 - 8. Another way to assign oxidation numbers from Lewis structures

Week 12 - 7. An introduction to electrochemistry (redox rxns and oxidation numbers)

Week 12 - 7. An introduction to electrochemistry (redox rxns and oxidation numbers)

Week 12 - 6. Calculating K from ∆Gº

Week 12 - 6. Calculating K from ∆Gº

Week 12 - 5. Calculating K from ∆Gº

Week 12 - 5. Calculating K from ∆Gº

Week 12 - 4 - Can we make diamonds out of carbon dioxide? ∆G tells all!

Week 12 - 4 - Can we make diamonds out of carbon dioxide? ∆G tells all!

Week 12 - 3. Calculating ∆G (for non-standard conditions)

Week 12 - 3. Calculating ∆G (for non-standard conditions)

Week 12 - 2. ∆Gº vs ∆G

Week 12 - 2. ∆Gº vs ∆G

Week 12 -1. What's "free" about Gibbs free energy?

Week 12 -1. What's "free" about Gibbs free energy?

Week 11 - 15. Manipulating reactions and calculating ∆G overall

Week 11 - 15. Manipulating reactions and calculating ∆G overall

Week 11 - 14. ∆G of formation

Week 11 - 14. ∆G of formation

Week 11 - 13. Calculating ∆G of reaction from tables of data

Week 11 - 13. Calculating ∆G of reaction from tables of data

Week 11 - 12. How to calculate ΔG from tables of ∆Hf and S

Week 11 - 12. How to calculate ΔG from tables of ∆Hf and S

Week 11 - 11. Calculating ∆G for a reaction

Week 11 - 11. Calculating ∆G for a reaction

Week 11 - 10. Effect of enthalpy and entropy upon Gibbs energy

Week 11 - 10. Effect of enthalpy and entropy upon Gibbs energy

Week 11 - 9. Gibbs energy changes during a reaction

Week 11 - 9. Gibbs energy changes during a reaction

Week 11 - 8. Gibbs free energy

Week 11 - 8. Gibbs free energy

Week 11 - 7. Calculating the entropy change of the surroundings

Week 11 - 7. Calculating the entropy change of the surroundings

Week 11 - 6. How can a system’s entropy decrease?

Week 11 - 6. How can a system’s entropy decrease?

Week 11 - 5. Calculating entropy change for a reaction

Week 11 - 5. Calculating entropy change for a reaction

Week 11 - 4. Calculating Changes in S from heat and temperature

Week 11 - 4. Calculating Changes in S from heat and temperature

Week 11 - 3. Entropy and phase changes

Week 11 - 3. Entropy and phase changes

Week 11 - 2. Entropy and second law of thermodynamics

Week 11 - 2. Entropy and second law of thermodynamics

Week 11 - 1. Basic thermodynamic definitions

Week 11 - 1. Basic thermodynamic definitions

Week 10 - 12. Precipitation calculation using Qsp and Ksp

Week 10 - 12. Precipitation calculation using Qsp and Ksp

Week 10 - 11. Precipitation reactions and Ksp

Week 10 - 11. Precipitation reactions and Ksp

Week 10 - 10. Common ion effect - part two (pH effects)

Week 10 - 10. Common ion effect - part two (pH effects)

Week 10 - 9. The common ion effect

Week 10 - 9. The common ion effect

Week 10 - 8. A second solubility calculation

Week 10 - 8. A second solubility calculation

Week 10 - 7. Solubility equilibria

Week 10 - 7. Solubility equilibria

Week 10 - 6. Three different pH titration curves and how to select an indicator!

Week 10 - 6. Three different pH titration curves and how to select an indicator!

Week 10 - 5. pH indicators and color

Week 10 - 5. pH indicators and color

Week 10 - 4. Acid base indicators

Week 10 - 4. Acid base indicators

Week 10 - 3. A buffer preparation problem for you!

Week 10 - 3. A buffer preparation problem for you!

Week 10 - 2. Preparing a buffer of desired pH

Week 10 - 2. Preparing a buffer of desired pH

Week 10 - 1. Buffer pH from acid to base ratios

Week 10 - 1. Buffer pH from acid to base ratios

Week 9 - 15. pH drop of an unbuffered solution

Week 9 - 15. pH drop of an unbuffered solution

Week 9 - 14. pH change calculation of a buffer

Week 9 - 14. pH change calculation of a buffer

Week 9 - 13. Calculating pH change of buffers

Week 9 - 13. Calculating pH change of buffers

Week 9 - 12. A Henderson-Hasselbalch problem

Week 9 - 12. A Henderson-Hasselbalch problem

Week 9 - 11. Using the Henderson-Hasselbalch (H-H) equation

Week 9 - 11. Using the Henderson-Hasselbalch (H-H) equation

Week 9 - 10. pH of a buffer using the Henderson-Hasselbalch (H-H) equation

Week 9 - 10. pH of a buffer using the Henderson-Hasselbalch (H-H) equation

Week 9 - 9. pH of a buffer using an ICE chart

Week 9 - 9. pH of a buffer using an ICE chart

Week 9 - 8. Buffers

Week 9 - 8. Buffers

Week 9 - 7. Polyprotic acids and pH

Week 9 - 7. Polyprotic acids and pH

Week 9 - 6. pH of a salt: a problem for you to try

Week 9 - 6. pH of a salt: a problem for you to try

Week 9 - 5. Finding pH of basic salt (part 2/2)

Week 9 - 5. Finding pH of basic salt (part 2/2)

Week 9 - 4. Calculating the pH of salt solutions (part 1/2)

Week 9 - 4. Calculating the pH of salt solutions (part 1/2)

Week 9 - 3. Acidity of salts

Week 9 - 3. Acidity of salts

Week 9 - 2. Acidity of cations

Week 9 - 2. Acidity of cations

Week 9 - 1. Acidity of anions

Week 9 - 1. Acidity of anions

Week 8 - 14. Lewis definition of acids & bases

Week 8 - 14. Lewis definition of acids & bases

Week 8 - 13 Example pH of weak base calculation

Week 8 - 13 Example pH of weak base calculation

Week 8 - 12 Calculating the pH of a weak base

Week 8 - 12 Calculating the pH of a weak base

Week 8 - 11. Weak bases and Kb

Week 8 - 11. Weak bases and Kb

Week 8 - 10. Strong bases

Week 8 - 10. Strong bases

Week 8 - 9. Finding Ka from pH

Week 8 - 9. Finding Ka from pH

Week 8 - 8. pH of a weak acid (using the quadratic equation)

Week 8 - 8. pH of a weak acid (using the quadratic equation)

Week 8 - 7. pH of weak acids

Week 8 - 7. pH of weak acids

Week 8 - 6. pH of strong acids

Week 8 - 6. pH of strong acids

Week 8 - 5. Some more pH calculations

Week 8 - 5. Some more pH calculations

Week 8 - 4. The pH scale

Week 8 - 4. The pH scale

Week 8 - 3. Acidic, basic, and neutral solutions

Week 8 - 3. Acidic, basic, and neutral solutions

Week 8 - 2. Auto-ionization of water

Week 8 - 2. Auto-ionization of water

Week 8 - 1. Acid ionization constant Ka

Week 8 - 1. Acid ionization constant Ka

Week 7 - 14. Strong vs weak acids

Week 7 - 14. Strong vs weak acids

Week 7 - 13. Conjugate acid-base pairs

Week 7 - 13. Conjugate acid-base pairs

Week 7 - 12. An introduction to acids and bases

Week 7 - 12. An introduction to acids and bases

Week 7 - 11. Some example problems involving Le Châtelier's principle

Week 7 - 11. Some example problems involving Le Châtelier's principle

Week 7 - 10. Using Le Châtelier's principle when dealing with pressure and temp changes!

Week 7 - 10. Using Le Châtelier's principle when dealing with pressure and temp changes!

Week 7 - 9. Le Châtelier's principle

Week 7 - 9. Le Châtelier's principle

Week 7 - 8. Tricks when solving ICE chart problems

Week 7 - 8. Tricks when solving ICE chart problems

Week 7 - 7. How to find equilibrium pressures using an ICE chart

Week 7 - 7. How to find equilibrium pressures using an ICE chart

Week 7 - 6. Using ICE charts to find the equilibrium concs when given K!

Week 7 - 6. Using ICE charts to find the equilibrium concs when given K!

Week 7 - 5. The reaction quotient (Q) and predicting direction of chemical change

Week 7 - 5. The reaction quotient (Q) and predicting direction of chemical change

Week 7 - 4. An ICE chart problem

Week 7 - 4. An ICE chart problem

Week 7 - 3. Calculating an equilibrium constant (K) from initial concs and one final conc

Week 7 - 3. Calculating an equilibrium constant (K) from initial concs and one final conc

Week 7 - 2. How to handle solids and liquids when writing an equilibrium constant

Week 7 - 2. How to handle solids and liquids when writing an equilibrium constant

Week 7 - 1. What are the units of the equilibrium constant, K?

Week 7 - 1. What are the units of the equilibrium constant, K?

Week 6 - 15. Calculating Kc from Kp

Week 6 - 15. Calculating Kc from Kp

Week 6 - 14. Kp vs Kc (pressure vs. concentration equilibrium constants)

Week 6 - 14. Kp vs Kc (pressure vs. concentration equilibrium constants)

Week 6 - 13. Finding an equilibrium constant by manipulating two other equilibria

Week 6 - 13. Finding an equilibrium constant by manipulating two other equilibria

Week 6 - 12. Manipulating reactions at equilibrium (multiplying, reversing, and adding)

Week 6 - 12. Manipulating reactions at equilibrium (multiplying, reversing, and adding)

Week 6 - 11. The meaning of Kc, the equilibrium constant

Week 6 - 11. The meaning of Kc, the equilibrium constant

Week 6 - 10. The equilibrium constant

Week 6 - 10. The equilibrium constant

Week 6 - 9. Dynamic equilibrium

Week 6 - 9. Dynamic equilibrium

Week 6 - 8. Catalysts

Week 6 - 8. Catalysts

Week 6 - 7. Rate determining steps

Week 6 - 7. Rate determining steps

Week 6 - 6. Rate laws for elementary steps

Week 6 - 6. Rate laws for elementary steps

Week 6 - 5. Reaction mechanisms

Week 6 - 5. Reaction mechanisms

Week 6 - 4. Finding the Activation Energy from 2 data points

Week 6 - 4. Finding the Activation Energy from 2 data points

Week 6 - 3. A two point method for finding Activation Energy and the Pre-Exponential factor

Week 6 - 3. A two point method for finding Activation Energy and the Pre-Exponential factor

Week 6 - 2. Measuring Activation energy from an Arrhenius plot

Week 6 - 2. Measuring Activation energy from an Arrhenius plot

Week 6 - 1. Arrhenius plots

Week 6 - 1. Arrhenius plots

Week 5 - 16. The exponential factor in the Arrhenius equation

Week 5 - 16. The exponential factor in the Arrhenius equation

Week 5 - 15. Collision frequency and pre-exponential factor

Week 5 - 15. Collision frequency and pre-exponential factor

Week 5 - 14. Potential energy diagrams for reactions

Week 5 - 14. Potential energy diagrams for reactions

Week 5 - 13. The affect of temperature upon reaction rate

Week 5 - 13. The affect of temperature upon reaction rate

Week 5 - 12. A summary of integrated rate laws and half lives

Week 5 - 12. A summary of integrated rate laws and half lives

Week 5 - 11. Second order half lives

Week 5 - 11. Second order half lives

Week 5 - 10. The half life of a first order reaction

Week 5 - 10. The half life of a first order reaction

Week 5 - 9. Half life

Week 5 - 9. Half life

Week 5 - 8. Zero order integrated rate equation

Week 5 - 8. Zero order integrated rate equation

Week 5 - 7. Using the second order integrated rate law

Week 5 - 7. Using the second order integrated rate law

Week 5 - 6. Second order reaction - integrated rate law

Week 5 - 6. Second order reaction - integrated rate law

Week 5 - 5. First order reactions

Week 5 - 5. First order reactions

Week 5 - 4. First order integrated rate law

Week 5 - 4. First order integrated rate law

Week 5 - 3. The integrated rate law

Week 5 - 3. The integrated rate law

Week 5 - 2. Another rate law determination

Week 5 - 2. Another rate law determination

Week 5 - 1. Determining a rate law

Week 5 - 1. Determining a rate law

Week 4 - 14. Fun with rate laws! How to calculate k (rate const.) and use it to predict another rate

Week 4 - 14. Fun with rate laws! How to calculate k (rate const.) and use it to predict another rate

Week 4 - 13. The rate law for a chemical equation

Week 4 - 13. The rate law for a chemical equation

Week 4 - 12. Writing expressions for reaction rates

Week 4 - 12. Writing expressions for reaction rates

Week 4 - 11. An introduction to chemical kinetics

Week 4 - 11. An introduction to chemical kinetics

Week 4 - 10. Some more van't hoff factor calculations

Week 4 - 10. Some more van't hoff factor calculations

Week 4 - 9. Colligative properties of strong electrolytes

Week 4 - 9. Colligative properties of strong electrolytes

Week 4 - 8. Interesting applications of colligative properties

Week 4 - 8. Interesting applications of colligative properties

Week 4 - 7. Calculating molar mass from osmotic pressure

Week 4 - 7. Calculating molar mass from osmotic pressure

Week 4 - 6. Osmotic pressure calculations

Week 4 - 6. Osmotic pressure calculations

Week 4 - 5. Osmotic pressure

Week 4 - 5. Osmotic pressure

Week 4 - 4. Calculating molar mass from boiling point elevation

Week 4 - 4. Calculating molar mass from boiling point elevation

Week 4 - 3. Writing a formula to allow us to predict bp elevation or fp depression!

Week 4 - 3. Writing a formula to allow us to predict bp elevation or fp depression!

Week 4 - 2. Boiling point elevation and freezing point depression

Week 4 - 2. Boiling point elevation and freezing point depression

Week 4 - 1. Colligative properties

Week 4 - 1. Colligative properties

Week 3 - 15. An example conversion between vol% and molality

Week 3 - 15. An example conversion between vol% and molality

Week 3 - 14 Converting between different concentration units

Week 3 - 14 Converting between different concentration units

$Week 3 - 13. Mole fractions and mole percentages$

Week 3 - 13. Mole fractions and mole percentages

Week 3 - 12. Converting between vol% & wt%

Week 3 - 12. Converting between vol% & wt%

Week 3 - 11. Vol% vs Wt%

Week 3 - 11. Vol% vs Wt%

Week 3 -10. Percent (%) concentrations, parts-per-million (ppm), and parts-per-billion (ppb).

Week 3 -10. Percent (%) concentrations, parts-per-million (ppm), and parts-per-billion (ppb).

Week 3 - 9. Molality or molal concentration

Week 3 - 9. Molality or molal concentration

Week 3 - 8. Solution concentration - molarity

Week 3 - 8. Solution concentration - molarity

Week 3 - 7. Henry's law and the breathalyzer!

Week 3 - 7. Henry's law and the breathalyzer!

Week 3 - 6. Gas solubility and Henry’s law

Week 3 - 6. Gas solubility and Henry’s law

Week 3 - 5. How does solubility depend on temperature?

Week 3 - 5. How does solubility depend on temperature?

Week 3 - 4. Qualitative concentration terms

Week 3 - 4. Qualitative concentration terms

Week 3 - 3. The famous "like-dissolves-like" rule!

Week 3 - 3. The famous "like-dissolves-like" rule!

Week 3 - 2. Solubility and how solutes dissolve

Week 3 - 2. Solubility and how solutes dissolve

Week 3 - 1. An introduction to solutions

Week 3 - 1. An introduction to solutions

Week 2 - 1. An introduction to this week's lectures

Week 2 - 1. An introduction to this week's lectures

Week 2 - 2. An introduction to phase diagrams

Week 2 - 2. An introduction to phase diagrams

Week 2 - 3. Using a phase diagram

Week 2 - 3. Using a phase diagram

Week 2 - 4. Liquefaction of gases

Week 2 - 4. Liquefaction of gases

Week 2 - 6. Unit cells

Week 2 - 6. Unit cells

Week 2 - 7. The seven (7) unit cell shapes

Week 2 - 7. The seven (7) unit cell shapes

Week 2 - 8. Body-cented cubic (bcc) unit cells

Week 2 - 8. Body-cented cubic (bcc) unit cells

Week 2 - 9. The face-centered cubic (fcc) unit cell

Week 2 - 9. The face-centered cubic (fcc) unit cell

Week 2 - 10. Density problem from unit cell data

Week 2 - 10. Density problem from unit cell data

Week 2 - 12. Atomic crystals

Week 2 - 12. Atomic crystals

Week 2 - 11. Kinds of crystalline solids

Week 2 - 11. Kinds of crystalline solids

Week 2 - 5. Solids

Week 2 - 5. Solids

Week 1 - 18. Heating curves and their relation to intermolecular forces

Week 1 - 18. Heating curves and their relation to intermolecular forces

Week 1 - 19. How to calculate the heat of sublimation

Week 1 - 19. How to calculate the heat of sublimation

Week 1 - 17. Vapor pressure curves

Week 1 - 17. Vapor pressure curves

Week 1 - 16. How to calculate the heat absorbed when a substance evaporates

Week 1 - 16. How to calculate the heat absorbed when a substance evaporates

Week 1 - 15. Heat of vaporization

Week 1 - 15. Heat of vaporization

Week 1 - 14. Vaporization, vapor pressure, and IMFs

Week 1 - 14. Vaporization, vapor pressure, and IMFs

Week 1 - 13. Ion-dipole intermolecular forces

Week 1 - 13. Ion-dipole intermolecular forces

Week 1 - 12. How do we explain the difference in boiling points between two "similar" compounds?

Week 1 - 12. How do we explain the difference in boiling points between two "similar" compounds?

Week 1 - 11. How hydrogen bonds affect boiling points

Week 1 - 11. How hydrogen bonds affect boiling points

Week 1 - 10. The hydrogen bond

Week 1 - 10. The hydrogen bond

Week 1 - 9. An example of a dipole-dipole interaction

Week 1 - 9. An example of a dipole-dipole interaction

Week 1 - 8. Dipole-dipole interactions

Week 1 - 8. Dipole-dipole interactions

Week 1 - 7. The dipole-dipole force

Week 1 - 7. The dipole-dipole force

Week 1 - 6. The relative strength of the London dispersion force

Week 1 - 6. The relative strength of the London dispersion force

Week 1 - 5. The origin of the London dispersion force

Week 1 - 5. The origin of the London dispersion force

Week 1 - 4. London dispersion forces

Week 1 - 4. London dispersion forces

Week 1 - 3. Atomic simulation

Week 1 - 3. Atomic simulation

Week 1 - 2. States of matter

Week 1 - 2. States of matter

Week 1 - 1. Welcome

Week 1 - 1. Welcome

Problem 14.16 - Rate Law from Initial Rate Data

Problem 14.16 - Rate Law from Initial Rate Data

Problem 14.6 - Relating rates of disappearance and appearance

Problem 14.6 - Relating rates of disappearance and appearance

Problem 14.5 - Writing rate expressions from monitoring changes in concentration

Problem 14.5 - Writing rate expressions from monitoring changes in concentration

lecture 22.3 - Solving a gas equilibrium problem for P

lecture 22.3 - Solving a gas equilibrium problem for P

lecture 22.4 - Solving a gas equilibrium problem using an ICE chart

lecture 22.4 - Solving a gas equilibrium problem using an ICE chart

lecture 22.2 - Example ICE-Chart Problem 2

lecture 22.2 - Example ICE-Chart Problem 2

lecture 22.1 - Example ICE-Chart Problem 1

lecture 22.1 - Example ICE-Chart Problem 1

4 / 4 - Lecture 17 - Example problem of solving for Activation Energy

4 / 4 - Lecture 17 - Example problem of solving for Activation Energy

3 / 4 - Lecture 17 - Solving for activation energy with rate constants at two different temperatures

3 / 4 - Lecture 17 - Solving for activation energy with rate constants at two different temperatures

2 / 4 - Lecture 17 - Arrhenius Plot

2 / 4 - Lecture 17 - Arrhenius Plot

1 / 4 - Lecture 17 - Introduction to the Arrhenius Equation

1 / 4 - Lecture 17 - Introduction to the Arrhenius Equation