|
Daily Outline for Chem 1451 email Desrochers
You may have to hit the refresh/reload browser button to see daily updates. |
|
|
Mon
Apr 28 |
Comprehensive Final Exam 8:00 10:00 am review
sheet posted |
|
Fri
Apr 25 |
Study Day no class Practice problems session 10 am - 12 noon
Rm 102, regular classroom |
|
Wed
Apr 23 |
Nuclear Ch 19 fission fusion |
|
Mon
Apr 21 |
Nuclear Ch 19 a,
b, g half lives Read: Sec. 19.1 19.5,19.6-7,9-12, Reread pp
578-9 Work Ch 19: 4,10,14,31-36,57-64,79,80,102,105,106
as assigned on the syllabus |
|
in lab |
Electrochemistry see download page ·
goggles, closed toed shoes (it may be warm
outside, but you will be safe in lab) ·
prelab due when
you arrive |
|
Fri
Apr 18 |
Quiz 10
Ch 18 key Nuclear Ch 19 a,
b, g |
|
Wed
Apr 16 |
Electrolysis Counting electrons Amps, Coulombs, Faraday Read Ch 18 Work remaining Ch 18 as assigned on the syllabus |
|
Mon
Apr 14 |
Standard reduction potentials will this oxidize this or will that
oxidize that? Batteries anode cathode salt bridge Fuel Cells metabolism Read: Sec. 18.1 18.7 Work Ch 18: 11-18, 37-70 |
|
in lab |
Balancing
redox reactions see download page In Laney 101 We will be working the worksheet posted on the
website. Bring your textbook. We will also be working Ch 18 homework and can
look at the prelab for next week; bring it too. |
|
Fri
Apr 11 |
Redox jargon Half reactions Standard reduction potentials DG = -nFE Read: Sec. 18.1 18.4, Sec. 4.9 Work Ch 18: 17, 53-70 |
|
Wed
Apr 9 |
FOURTH EXAM (Ch 15, 16) key I
spoke out of turn. The bonus problem (for
those who did it correctly) was NOT a buffer (not at the equivalence
point). Sorry for the confusion. It was in fact a weak conjugate acid
problem, requiring [HA], Ka, and an ICE chart all leading to an
acidic pH. For
problems like this bonus see: 66 72
from Ch 16 as assigned on the syllabus. |
|
Mon
Apr 7 |
Titrations polyprotic
acids and bases Read: Sec 16.1-16.6 Work remaining Ch 16 as assigned on the syllabus |
|
in lab |
Making
Buffers see download page ·
goggles, closed toed shoes (it may be warm
outside, but you will be safe in lab) ·
prelab due
when you arrive ·
before you arrive, you must have calculated all
your values to make your particular pH buffer |
|
Sat
Apr 5 |
The UCA Chemistry Club is hosting a Demo-palooza event on Saturday, April 5th on the first floor
of Laney Hall from 3-6 PM. We have invited UCA alumnus Dr. Bill Deese of Louisiana Tech University and UCA's very own Dr.
Jerry Manion, who are both known for doing chemical
demonstrations to public audiences to "perform" and explain the
chemistry of their demonstrations. We
hope this will be a good opportunity for us all to learn tips on how to do
chemical demonstrations. In addition
to the UCA community, we are also inviting other chemistry clubs at nearby
universities and colleges. These two guys have excellent chemistry demos.
Worth your time to see this show. |
|
Fri
Apr 4 |
Quiz 9
Ksp, solubility, common ion
effect Ch 16: 85-104 as assigned on the syllabus key Titrations choosing an indicator p 743 Read: Sec 16.1-16.6 Work Ch 16: 61 78 as assigned on the syllabus |
|
Wed
Apr 2 |
3. adding things to buffers, Question 60 p 763 Acid/Base reactions See Q 139 p 710 Titrations
bring
this and this
to lecture Read: Sec 16.1-16.6 Work Ch 16: 61 65, 75 - 76 as assigned on the syllabus |
|
Mon
Mar 31 |
Buffers!
Bring to lecture your copy of the
buffer lab we will be doing next week. 1. recognize one when you see it 2. making one 3. adding things to one Read: Sec 16.1-16.6 Work Ch 16: 27 - 60 as assigned on
the syllabus |
|
in lab |
Ksp of KHT and common ion effect
see download page ·
goggles, closed toed shoes (it may be warm
outside, but you will be safe in lab) ·
prelab due
when you arrive ·
buffer pH chosen for Apr 7 |
|
Mar 24 28 |
SPRING BREAK |
|
Fri
Mar 21 |
Quiz 8 key solubility equilibria, pH dependence when do
things precipitate Buffers! determine the pH of the solution containing: 3.06
g NH4Cl + 50 mL 0.2 M NH3 here is
my work 1. recognize one when you see it Read: Sec 16.1-16.6 Work Ch 16: 27 - 60 as assigned on
the syllabus |
|
Wed
Mar 19 |
Weak acid titration lab (from Mar 10)
due today, all post lab Qs, include the titration curve (axes labeled),
include complete prelab saturated, unsaturated, supersaturated Ksp common ion effect Read: Sec 16.1-16.6 Work Ch 16: 85- 100 as assigned on
the syllabus |
|
Mon
Mar 17 |
pKa pKb pKw bring
this to lecture see also Q 89 p
708 polyprotic
acids and bases (see both 109 p 708 and 77a p 707) bring
this also Read: Sec
15.1-15.12 Work remaining Ch
15 as assigned on the syllabus |
|
in lab* swapped with Mar 31 |
We will be in Rm 101 for
this session. Ch 15, 16 workday The fourth exam is the most comprehensive
to date. We will be working toward
your success on this fourth exam. ·
K FeSCN dry
lab due first thing. Here is the required
work for the K Fe-SCN lab that we lost on Mar 3. ·
Bring your weak acid titration lab. Do the titration curve at home. Label your axes appropriately. ·
Hydrolysis of salts bring
this also ·
Oxides: covalent vs ionics ·
Lewis acids and bases ·
Ch 15 HW completed by you |
|
Fri
Mar 14 |
THIRD EXAM (Ch 14, 17, 15 through Mar 12) Ch 14 will be weighted more heavily on this exam key |
|
Wed
Mar 12 |
Ka, Kb the approximation (work and understand #16 p 650) Read: Sec
15.1-15.7 Work Ch 15: 3,13,17,33-92 as assigned on the syllabus |
|
Mon
Mar 10 |
Quiz 7 Ch 14,17 be ready key pH, pOH, KW Here is the required work for the K Fe-SCN lab that we lost on Mar 3. This completed work is due Mon when you come to lab for the work day. Read: Sec
15.1-15.6 Work Ch 15: 3,13,17,33-54 as assigned on the syllabus |
|
in lab |
Weak acid titrations see download page |
|
Fri
Mar 7 |
Prob 66 Ch 17 bring this to lecture Acids/base definitions Lewis vs Bronsted bring this to lecture Conjugate Acid/base pairs Read: Sec
15.1-15.6 Work Ch 15: 3,13,17,33-54 as assigned on the syllabus |
|
Wed Mar 5 |
V and T effects
download a revised
syllabus posted on the course website Sec
17. and 17.9 DG and Q and K LeChatelier
with numbers Work remaining Ch
14 as assigned on the syllabus Work remaining Ch
17 as assigned on the syllabus |
|
Mon Mar 3 |
lost to snow/ice |
|
in lab |
Keq for Fe-SCN see download page an out-of-class activity will be planned for this lost
to snow |
|
Fri Feb 28 |
Quiz 6
Equilibrium key more K calculations esp #47 K has meaning
LeChatelier
again #70, 72 Read: Sec 14.1
14.9, 17.8, 17.9 Work Ch 14: 2 68,
71 76, 79, 87 - 101 as assigned on the syllabus |
|
Wed Feb 26 |
K
calculations lots of them At Eq? If not which way
will it shift? ICE Read: Sec 14.6
14.8 Work Ch 14: 35
58 as assigned on the syllabus |
|
Mon Feb 24 |
k K and DG meaning of K bring
these notes writing and
manipulating K expressions Read: Sec 14.1
14.5 Work Ch 14:
2,21-34 as assigned on the syllabus |
|
in lab |
LeChateliers Principle see download page · prelab completed and due first thing in lab |
|
Fri Feb 21 |
SECOND EXAM (Ch 13, 17) will provide any values from App II, DG = DH
- TDS integrated rate eqns
for 1st and 2nd order |
|
Wed Feb 19 |
Kinetics Effects of T Catalysts Arrhenius |
|
Tue Feb 18 |
4:30 pm
CV + OH kinetics lab Due STAPLED In my office, under my door, or in my
mailbox, Rm 205. Attached
here are my tips on finishing the CV + OH- kinetics lab |
|
Mon Feb 17 |
Dr.
Don Perry lecturing elementary
vs complex reactions mechanisms rate limiting step bring these notes to use with Dr. Perry intermediates Activation
energy Read:
Sec. 13.1 13.7 Work Ch 13: 16,18,73-76,94,103 as assigned on the syllabus |
|
in lab |
No
lab this week, study for the exam |
|
Fri Feb 14 |
Quiz 5 rate expression, reaction orders key integrated
rate law half
lives, p 581 bring
these notes my
work for these extra problems concentration
and time problems Attached
here are my tips on finishing the CV + OH- kinetics lab Read:
Sec. 13.1 13.7 Work Ch 13: 9, 45-56 as assigned on the syllabus |
|
Wed Feb 12 |
Kinetics rate law, rate equation, rate expression k and order relative rates ([conc] vs rate data) bring these notes integrated
form ([conc] vs
t) Linked
here are really good CV + OH- kinetics data. I know now that our CV solution was old
(too many days) and too dilute. This
made the rate much slower than usual, meaning only the most precise groups of
students were able to distinguish between 1st and 2nd
order plots in their data. The
students who collected these linked data were very precise. I suggest everyone use these data to complete the crystal violet kinetics writeup. Read:
Sec. 13.1 13.7 Work Ch 13: 4-6, 25 46 as assigned on the syllabus |
|
Mon Feb 10 |
Thermodynamics T dependence of DG Read: Sec 17.1 17.8 also reread Sec 6.8 6.9 Work: Ch 17 HW as assigned on your syllabus |
|
in lab |
How does it happen? Kinetics: rate = [CV][OH-] see download page · KNO3 Thermo lab from last week due first thing in lab. · work as much of the prelab as you can before coming to lab · no open toed shoes, goggles (some available for sale, $6) |
|
Fri Feb 7 |
Quiz 4 key How G is unique bring these notes Second Law, DSuniverse Will it happen? T dependence of DG
Read: Sec 17.1 17.8 also reread Sec 6.8 6.9 Work: 2-17,30-62,79,80 as assigned on your syllabus |
|
Wed Feb 5 |
How S is unique bring these notes weird units Third Law absolute entropies qualitative trends
Read: Sec 17.1 17.5 also reread Sec 6.8 6.9 Work: 17.10, 17,30-32,45-52 as assigned on your syllabus |
|
Mon Feb 3 |
Thermodynamics How G, H, and S are the same bring these notes State Functions Hesss Law Appendix II
Read: Sec 17.1 17.5 also reread Sec 6.8 6.9 Work: 17.10, 17,30-32,45-52 as assigned on your syllabus |
|
in lab |
KNO3 thermodynamics of dissolving see download page · work as much of the prelab as you can before coming to lab · no open toed shoes, goggles (some available for sale, $6) |
|
Fri Jan 31 |
FIRST EXAM (Ch 11, 12) key Pi = ciPo , DT = mKi , values of Kf and Kb,DHvap or DHfus (as needed), and periodic table will be provided on the exam |
|
Thu Jan 30 |
3 pm Q & A Rm 101 Stop by if you are able |
|
Wed Jan 29 |
Freezing point depression Boiling point elevation DT = mKi osmosis
Read Sec 12.1 - 12.7 Work Ch 12 as assigned on the syllabus |
|
Mon Jan 27 |
Quiz 3 first 10 min of class key Vapor pressure of solutions Pi = ciPo Freezing point depression Boiling point elevation
Read Sec 12.1 - 12.7 Work Ch 12: 1-22, 29 72,93-102 as assigned on the syllabus |
|
in lab |
Sugar composition using density see download page · prelab completed before coming to lab, due first thing · no open toed shoes, goggles (some available for sale, $6) |
|
Fri Jan 24 |
Solution concentration calculations M, m, c pp_ and very dilute solutions Quiz 3 Mon
Read Sec 12.1 - 12.7 Work Ch 12: 1,5,8,10,11, 29 68 as assigned on the syllabus |
|
Wed Jan 22 |
Solution energetics, like dissolves like saturated, unsaturated, supersaturated DHsoln = DHsolvation - DHlattice gas solubilities bring these notes
Read Sec 12.1 - 12.6 Work Ch 12: 1,5,8,10,11, 29 68 as assigned on the syllabus |
|
Mon Jan 20 |
Martin Luther King Holiday--no lecture or lab |
|
Fri Jan 17 |
Chem I Review Quiz (Quiz 1 and Quiz 2 of Chem 1451) Graphing assignment due first thing, stapled before coming to class Solids bring these notes |
|
Wed Jan 15 |
Phase diagrams Constant T and constant P changes
Read: Sec. 11.1 11.9, 11.12 Work: Ch 11 as assigned on syllabus |
|
Mon Jan 13 |
IMF jargon leading to strongest, weakest IMF polar molecules slide from class Heating curve, two qs
Read: Sec. 11.1 11.9, 11.12 Work: 2,3,9,19-22,25,32,49-82 as assigned on syllabus |
|
in lab |
· Syllabus, expectations, What if I have a scholarship and am worried about my grade? · Graphing assignment Due Fri Jan 17 pages stapled · liquefied gases (real vs ideal gases) Titan and Saturn · C2H6O example, one a liquid the other a gas · Vapor pressure · Equilibrium vapor pressure · Bp vs normal Bp Q: How could a beaker of pure ethanol, a hotplate and thermometer, and usedas a barometer? Q: How much water must evaporate to fill our classroom if the humidity in the room is ____ % · Chem 1450 practice. Many need it. A quiz to test your Chem 1450 skills will be given Fri Jan 17. Specific topics for the quiz can be found on my Chem 1451 mainpage. For years now, success on quizzes in my course has been a strong indicator of your likely success on exams and in the course overall. |
|
Fri Jan 10 |
Polar bonds vs polar molecules IMF
Read: Sec. 11.1 11.8 |