In class: review session.  Come with questions.

Exam: 7pm – 9pm ISB 221.  Bring pencil, calculator, and an optional 3×5 notecard with handwritten notes on it (front and back).

Chapter 7: 236-239

HW: 21, Exercise 7.5 (answer on p693)

Goals: distinguish conductors using band theory;predict conductivity trends due to doping; distinguish n/p-type semiconductors using band theory.

BandStruct_inked (Sept 28)

I will available to help students 9:30 – 10:30 AM on Monday morning this week.  I’ll be in the coffee area near blue wall (student center).  If you have specific questions, that really helps us both.

Solids

Ch 7: 233-236; 247-252

Goals: Predict lattice energy and solubility using ion size, HSAB, and packing; (Try for Wed: relate silicate structure to stoichiometry)

HW: Ch 7, # 15, 17, 19, 20, 28

Slides: SLides_Sept_26b

Chapter 7: 220-233

Goals: ID holes in simple structures; use unit cell reps to determine stoichiometry in complex structs

Bring 1 computer for each ~ 4 students.  You’ll need it!  We’ll run the activity below, so check it out ahead of time.

Here’s the worksheet that we’ll use, with the internet link listed below.:  ionicmodelsexercise

Activity: http://firstyear.chem.usyd.edu.au/calculators/solid_state.shtml

Answers to the activity: IonicModel_Answers

Homework: Complete the worksheet from class.  Here are some problems to solve: 2, 3, 5, 6, 7, 8, 10, 12, 13, 14

Homework Answers, MT_Ch7

Chapter 6:206-215

HW: 27, 28, 29, 30, 31, 32, 33, 36

Goals: Predict pKa using periodic trends, structures; solvent levelling

Activity: What happens when chemical compounds are added to water?

Acid_Base_Sep21

Homework answers: MiesTarr_Ch6

Acid/Base

Chapter 6:191-201 (skip the paragraphs about Drago and Wayland).

HW: 13, 14, 16, 17, 18, 19, 22, 23, 25, 26, Ex 6.3, Ex 6.4

Goals: Use HSAB to predict Ksp and Keq and Kf; predict M-L affinities; Correlate HOMO/LUMO energies with absolute hardness.

Acid_Base_Sep19

Acid-Base Chemistry

Chapter 6:177, 180-183

HW: Ch 6: 1, 2, 3, 4, 5, 6, 8ac, 9, 10b, 11, 12

Goals: Contrast Lewis acid/base with Bronsted; Use frontier orbitals to construct dative bonds

Acid_Base_Sept_16

Ch 3, pp 73-78

Goals: Predict bond polarity; predict boiling points EH

HW: Ch 3# 36, 37, 38(a-e)

HW Answers (Spoiler Alert: be sure to try the problems before you check the answers….)MT_Ch3

Slides: Sept 12_14

Ch 3 pp 59-70
HW: 17, 18, 28, 32, 33, 34, 35, 38
Learning Goals: How to predict complex geometry; How to draw Lewis structures
Activity: The Extremely Explosive Carbonyl Diazide Molecule