Chem. 1B – 12/10 Lecture

Announcements I• Today

– Complete Chapter 20 Material– Overview of Material since Exam 3– Teaching Evaluations

• Grading– Make up quizzes graded (solutions posted); will

replace lowest quiz score (most students); not updated onto Blackboard

– I expect to update Blackboard by Tuesday• Final Exam

– Thursday, Dec. 17, 12:45-2:45 (sect. 2 to 6 here)

Announcements II• Final Exam – cont.

– Help Session (Tues. 12/15, 3:30-4:30, Sequoia 452)– Format (52 multiple choice questions – including

two bonus questions – Bring Scantron SC982-E)– All material covered is possible for questions– Chapters where we spent more weeks (16 and 18) will

have more questions– I will post some example organic chemistry problems– I tend to select what I think are easy questions that

students haven’t done well at for repeat questions (Make up quiz example)

Announcements III• Mastering Chemistry

– Chapter 20 questions – due 12/15• Today’s Lecture

– Organic Chemistry• Aromatics (finish questions)• Functional Groups

– Review for Final Exam – since Exam 3• Chapter 24 Material• Chapter 20 Material

Chapter 20 Organic Chemistry• Mistake from Last Time

2. Give the names of the following compounds:

NH2

Br

2-butylbenzene (not isobutyl) or 2-phenylbutane

Chapter 20 Organic Chemistry• Functional Groups• What you need to know:

• Class name• Identification• Polar groups

• Alcohols ROH (R = rest of molecule)• OH group is polar• Example: CH3OH (methanol)

• Ethers ROR• Example (CH3CH2OCH2CH3 = diethyl ether)

Chapter 20 Organic Chemistry• Functional Groups – cont.• Ketones (R-C-R)

O• example: acetone• somewhat polar

• Carboxylic Acids (R-C-OH) O

• Polar and acidic• Amines (R3N) – note here one or two Rs can be

Hs• Polar and basic

Chapter 20 Organic Chemistry• A Few Questions1. Given the compound below, what functional groups does it have?

a) alcohol b) amine c) alcohol and amined) ketone and amine e) ketone and alcohol2. Is that compound polar or non-polar?3. CH3CH2CH2OCH3 is a/an ________a) alcohol b) ether c) ketone d) carboxylic acid

O

NH2CH3

Final Exam Review• Chapter 24 – Bonding Theory

• Common mistake on Exam 3 and Make Up Quiz – coordination complex electrons come from ligand lone pairs (not from metals or from other electrons on ligands)

• Know which d orbitals overlap more with ligand bonds in octahedral complexes and which overlap less

• Know how overlap leads to a split in the d orbital energies

• Know difference between low spin and high spin filling of d orbitals

Final Exam Review• Chapter 24 – Bonding Theory

• Know how ligand (e.g. strong vs. weak) affects filling and of coordination complexes

• Know how metal charge affects of coordination complexes

• Be able to predict the d orbital electron configuration of coordination complexes (if known whether ligand is strong or weak)

• Know what causes coordination complexes to absorb light in visible, plus be able to calculate from or visa versa

Final Exam Review• Chapter 24 – Bonding Theory

• Be able to determine number of unpaired electrons and how that affects magnetic properties of complexes

• Understand why differences in energy levels occur for other geometries (tetrahedral, square planar)

• Chapter 20 – Carbon Bonding• Know number of bonds formed by carbon in

organic compounds• Know hybridization and geometries (sp3, sp2, and

sp for alkanes, alkene Cs, and alkyne Cs)

Final Exam Review• Chapter 20 – Alkanes

• Know full structure and carbon skeleton representations

• Know names of alkanes (linear chain up to 10 carbons)

• Understand how a branched alkane is an isomer (plus how to name mono- and di-substituted alkanes)

• Be able to identify optical isomers and chiral carbons (not just for alkanes)

Final Exam Review• Chapter 20 – Alkenes

• Be able to identify alkenes + know carbon skeleton representation

• Be able to give names of linear and branched alkenes

• Be able to identify cis- and trans- isomers and alkenes without cis-/trans- isomers

• Know names of alkanes (linear chain up to 10 carbons)

• Know effect of double bonds on melting points

Final Exam Review• Chapter 20 – Alkynes

• Be able to identify, name and recognize carbon skeleton structure

• Chapter 20 – Reactions• Be able to predict products and balance

stoichiometry for combustion reactions• Know halogenation reactions of alkanes• Be able to predict products of hydrogenation

and halogenation reactions involving alkenes (both + X2 and + HX types)

Final Exam Review• Chapter 20 – Reactions

• Know differences between alkene reactions and other reactions

• Chapter 20 – Aromatics• Be able to identify, name and recognize carbon

skeleton structure (up to two substituents plus common substituents mentioned)

• Chapter 20 – Functional Groups• Be able to identify alcohol, ether, ketone,

carboxylic acid, and amine functional groups• Know which are functional groups are polar