1. LAB TIME! Pre Lab 16 out, please (and laptop out for later)
Calculate the solubility of strontium phosphate in pure water: Ksp of Sr3(PO4)2 = 1 x 10-31
Answer:

2. Lab 16 Pre-lab Check Off Work time – BE VERY CAREFUL to not mess up
Excel sheet should be printed off and in lab book when it is correct
Work time – BE VERY CAREFUL to not mess up
27 pipettes needed (don’t contaminate!)
Use one for Ca(NO3)2 and NaOH stock solutions, and water
CLEAN VERY WELL without brush (only soap and water), otherwise the well plates will be ruined
Rinse at end with DI water
If you finish and are cleaned up – start lab write-up!
ALL in lab book, legibly written

3. Recommendation for Pipettes
Use one for each well (to mix after serial dilution and at end)

4. Review time! (Jan 11) Out on your desk: Today’s plan:
Winter Break Review Packet
Notes
Today’s plan:
More PES and Internuclear Distance Practice
Commonly missed exam qs
Winter Break Review Questions and Discussion
More Practice!
HW: Ksp Lab 16 and short Webassign done for Monday, finish review WS from class today by next week as you have time before we review for the second part of exam

5. PES: What is this element?
Mg.

6. PES: photoelectron spectroscopy
Identify the following element by its PES:
Where is the peak from the 1s orbital?
K (that little peak is the 4s1)

7. PES: photoelectron spectroscopy
What is wrong with this diagram?
Wrong: Ne third peak (lowest E) should be taller because it is the 2p6 electrons, and the other are only 2 electrons each.
Explain why the 1s energy is so different for the PES’ of Ne and He

8. Internuclear Distance
A plot of potential energy versus distance as two atoms come together in a bond.
Sketch this
and we will
label it 

9. Internuclear Distance

10. Internuclear Distance

11. More practice – Review WS!
Homework if not finished by the end of the period – done by next week for review for exam part 2
I will put Key to the Winter Break Review on Moodle. It’s up to you to check it and ask more questions if you are confused!

12. Homework Day 7 Webassign Equilibrium 2 due Monday by 8am
Lab 16 due Monday in class – Hand written calculations and conclusion qs in your lab book.
EXPLAIN WELL!
Read 16.1 if not already read!
REVIEW stuff: check keys to winter break packet, keep working on review questions MC WS I gave you today