Fall 2009 CHEM 123 – Sec CNA Dr. Yau

CCBC – Catonsville

1. Special Announcements: FINAL EXAM FOR CHEM 123 is Thurs 12/17/09 at 12:00noon-2:00 pm

in our regular classroom, E-106.

Wondering if the college is closed due to weather? This is how you tell.

2. Assignment (updated Thu 11/19/09)

3. Practice Exams

Practice Questions for Exam I (List of what is covered on Exam I)

These are the only equations that will be provided for you at your Exam II: Click here
Practice Questions for Exam II (List of what is covered on Exam II)

Practice Questions for Exam III (List of what is covered on Exam III)

Sorry, no practice questions for Exam IV (List of what is covered on Exam IV)
(Practice with problems from back of chapter & suggested practice exercises listed in PowerPoints and handouts.)

The only equation provided you on the exam is Nernst Equation.

Also provided is the R constant and Faraday’s constant.

4. Answers…(no late homework accepted once answers have been posted)

Ans to Exam IV (Average 73%, highest score in class = 86%)
Ans to Exam III (Average 73%, highest score in class = 105%)
Ans to Wiley #10
Ans to HW#6 (Lewis acids/bases)

Ans to HW#5 (concentrations in equilibrium problems)

Ans to Exam II (Average 75%, highest score in class = 104%)

Ans to HW#4
Ans to HW#3 (graph: conc vs. time)

Ans to Exam I (Average = 65%, highest score in class = 98.5%)
Ans to HW#1

Ans to HW#2

5. Course Syllabus (For those who lost theirs.)

6. Login to WileyPlus: http://edugen.wiley.com/edugen/class/cls128706/ (for Dr. Yau’s section only)

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Lecture Material

The symbol Ö means we have covered this in class.

Chap. 20

Nuclear Chemistry

Chap. 19

Ö Electrochemistry Part I: Redox Review
Ö Balancing Redox Eqns Under Acidic and Under Basic Conditions (handout)

Ö Electrochemistry Part II: The Galvanic Cell
Table 19.1 Standard Reduction Potentials p.779

Ö Electrochemistry Part III: Reduction Potentials

Ö Electrochemistry Part IV: Spontaneity, Nernst Eqn & Electrolysis

Chap. 18

Ö Thermodynamics Part I: Spontaneity of Reactions
Ö Thermodynamics Part II: Gibbs Free Energy & Equilibrium

Ö Calculating Enthalpy of Rxn from Bond Energies (handout)

Chap. 17

Ö Solubility & Simultaneous Equilibria Part I: Ksp and Solubility

Ö Solubility & Simultaneous Equilibria Part II: Effect of pH, Complex Ion Formation & Selective Precipitation

Chap. 16

Ö Weak Acids & Bases Part I: Intro to Equilibrium Law & Ionization Constants

Ö Weak Acids & Bases Part II: Ka and Kb

Ö Weak Acids & Bases Part III: Quantitative Analysis of Salts

Ö Weak Acids & Bases Part IV: Buffers
Ö Weak Acids & Bases Part V: Polyprotic Acids

Chap. 15

Ö Acids & Bases: Part I (Definitions)

Ö Acids & Bases: Part II (Strong vs. Weak Acids)

Ö Acids & Bases: Part III (Other Types of Acids & Bases)

Ö Acids & Bases: Part IV (pH and Acidity)

Chap. 14

ÖChemical Equilibrium: Part I (What it means and how Le Chatelier’s Principle explains it)

ÖChemical Equilibrium: Part II (Working with K)
ÖChemical Equilibrium: Part III (Equilibrium Concentrations)

Chap. 13

Ö Kinetics: Part I (Rates of Reaction)

Ö Kinetics: Part II (Rate Laws & Order of Reaction)
Ö Kinetics: Part III (Integrated Rate Laws)
Ö Kinetics: Part IV (Activation Energy & Arrhenius Equation)

Ö Kinetics: Part V (Rxn Mechanism)

Click here for a tutorial on logarithm and significant figures when dealing with log.

Chap. 12

Ö Solutions Part I (Sec 1 thru 4: Solubility)
Ö Solutions Part II (Sec 5: Concentration Units)
Ö Solutions Part III (Sec 5-9: Colligative Properties)