Great JOB everyone!!
TA's lab awards!
Award for neatest notes: Reem and Chrissy
Award for most extensive notes: Lia and Caroline P.
Award for most stubbornness and excellence: Mark and Sanjana
Great JOB everyone!!You all did amazingly - I was really impressed with your class. You all did remarkably well keeping up with lab and I'm proud of every one of you! If you never come back to chemistry, I hope you will look back on it fondly. For those of you going on, charge out there and embrace chemistry in all its awesomeness! TA's lab awards!Award for best lab technique: Lia Award for neatest notes: Reem and Chrissy Award for most extensive notes: Lia and Caroline P. Award for most stubbornness and excellence: Mark and Sanjana Chalcone synthesisDiazo dye synthesis
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Highlights of the Luminol LabEveryone did a great job making luminol today! It was the following reaction: 3-nitrophthalhydrazide + sodium hydrosulfite --> luminol Afterward, the luminol was oxidized with a solution of 3% potassium ferricyanide, to produce a bright phosphorescence. It was so much fun to watch! The luminol reaction IS in fact used in some glow sticks, but it seems to depend on the kind you get. The following are photos of the process, featuring various student samples. Adding the 3-nitrophthalhydrazide to 10% NaOH!Some people's solutions were yellow - the last two had the sodium hydrosulfite added. The very last was also acidified.FINALE: Phosphorescence!!Intriguing Brain Benders - Questions for Thought1. If the phosphorescence reaction produces nitrogen, why isn't there bubbling?
2. What does the acid in the reaction accomplish, after adding the sodium hydrosulfite? IntroLast week, students isolated the active ingredient from common drugs using extractions and recrystallization. This week, they reacted this product with concentrated sulfuric acid, boiled it for an hour, did extractions and made a spearmint smelling compound from it! Here are some photo highlights. Highlights from the headache pill lab with comments!Highlights from this week's lab: making the compoundThis week in lab, our students endured trials of gravity filtration, with samples getting stuck and needing extra washes, along with many other interesting happenstances. There were many tricky features of making this compound. I was impressed with everyone's determination to see it made. As far as I know, everyone was able to obtain the final product. Good job guys!!
IntroHey guys! This week we get to dissolve a headache pill, separating out the active ingredient by recrystallization! Make sure to read the lab manual and write yourself up a procedure! To help out, I've included an awesome 7 min video on the technique. Recrystallization*Note: When adding the water solvent to the solid for recrystallization, notice how the person in this video boils the water first, then adds it a bit at a time, with the flask for the solid and the water on the same hot plate. I would advise this method, as then one can avoid adding too much water. Other important items for this weekWhen you come to class, I will be collecting your caffeine assignments! So, have them prepared before you arrive. Comments on last weekLast week, I was impressed! You all isolated caffeine like pros! However, we lost a point on clean up due to the balances being dirty. Make sure to clean the area around the balances before you leave the lab! Thanks so much!
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Rolling Statuses: Technical journal blog. Here you may discover what the daily life of a grad student looks like: day-to-day snippets of life, clutter, rolling statuses and unimportant fluff.
Progress Updates: Will include entries with more meaningful science. Weekly lab report: My write-ups on what I did each week (I posted these publicly during my rotation but not as much now. That may change.) Science StatusHere is a link to collected writing, poster and presentation tips.
As of February 8, 2014 I have officially joined the Salaita lab!! Very exciting. Stay tuned for updates. "Micro Min" category equates to grad school journaling; most of these have moved to my status updates blog under Home tab. See "progress updates" on this blog for more important news.
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