[Preplabstudents] Autumn 2024- Week 5

[Weaver, Tyler A.]

Greetings!

Don’t forget that Mondays are slightly behind everyone else. One more day of crazy ice use this semester.

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Experiment Notes-Refer to the window notes and gather sheets for additional details.

STR
This is one of my favorites! Nothing should be needed from the lab support window. The waste will be disposed of in the white can (Chemical Waste container) in Hood B.

PbI
Solid reagents will be handed out from the lab support windows. Vacuum tubing is in a drawer at each station. Extras will be available at each window. We’ll be using the vacuum ports for this experiment; the TAs do not need to do anything with the vacuum pump. Be sure the vacuum control knob in the second floor window is in the “auto” position. We will also be using the ovens; they open by pulling the bottom of the handle up towards the ceiling- no rotating required. We strongly encourage TAs and students to keep the oven doors closed as much as possible. This helps with heat loss.

BAR
We will be using the blue and white spectrometers for this experiment. These spectrometers are behind the white boards in each room on the second floor. Cuvettes and volumetric flasks will be on the reagent cart or on the bench next to Hood A. These items should be returned after use. Be prepared to replace the volumetric flasks, they occasionally get broken. As a reminder, if any pipet pumps with glass in them (or “leaky” pipet pumps) are returned to the window, please put them in the appropriate labeled bin in the window.

SYN Day 2
Be prepared to direct students to the ice machine outside of the restrooms. There is no scoop provided, students should just use a beaker from their drawer. Extra white pea size stir bars and vacuum tubing will be available in the window. Concentrated phosphoric acid is is used for Day 2 and will be provided in Hood A. Each room will have a microscope. We will snag a tiny amount of sample from the first group to obtain crude product to put under the microscope. If the microscope says it’s not connected, you need to go into the tablet wifi settings and connect to the option that starts with M. If it asks for a password, its just 12345678. Any questions you cannot answer should be directed to me.

XUF Day 1
Students will not be running XRF analysis on their pennies, instead Sarah has done this for them. The results are on the sticker attached to each bagged penny. We will be using the blue and white spectrometers for this experiment. Pennies are in the window. Hazardous gas will be produced when the penny dissolves. If the exhaust stops working the lab room must be evacuated. The “old UV-Vis solution” will be provided ready to use, no dilution needs to be done before analysis.


Other Important Information-

Lab Security

Any of our labs that are not occupied need to be locked. This includes the prep lab. If you are the last person in the prep lab, and need to go somewhere, please lock up before leaving the lab/office. We have had thefts from the Department in the past. An unlocked, unattended lab space is

Waste Runs

I schedule waste runs for all lab rooms that have not been checked since the last time they were used. If we aren’t using a lab room at the time the waste run is scheduled, you still need to check it. Its quite possible we didn’t have time to check it when it was used last.

You are welcome to check the rooms first to determine what supplies need to be brought up. Alternately, you can just take up a cart loaded with everything you might need. As we have mentioned several times, waste runs cannot be done alone. If your partner is not around, give them a couple minutes. If they still don’t show up, please grab someone out of the prep lab office to help you. If there aren’t any students available, grab one of the prep lab staff.

Window Cart

The window carts got hit pretty hard last week. Please check them periodically and restock anything that is getting low. Let us know if you are getting low on any supplies in the window. It can take some time to get replacement items out of Evans.

Trash & Recycling

I have been asked to remind you that if we ask you to take items to the dumpster, bulk trash should go in the large brown open top dumpster closest to Evans Lab. Nothing should be put in the large redish open top dumpster on the loading dock- this is for construction materials only. Recyclable materials should be put in the smaller red dumpster with the plastic lids. Bags of trash should be put in the small gray dumpster with the plastic lids.

Please let us know if you have any questions or concerns.

Best,
Tyler

[The Ohio State University]

Tyler Weaver
Instructional Lab Supervisor
General Chemistry Prep Lab Manager

The Ohio State University
Department of Chemistry and Biochemistry
280E Celeste Lab
120 W. 18th Ave., Columbus, OH 43210
(614) 688-3929 Office
weaver.646 at osu.edu<mailto:weaver.646 at osu.edu>

Pronouns: he/him/his

Please do not feel obliged to read or reply to my messages outside of your normal working hours.
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