Exp 5
Draw the aspirin structure.
Student input
What is the chemical formula of magnetite?
Fe3O4
What anion is tested for using a brown ring test?
Nitrate
How many Guest Speakers did we invite to our class excluding members of today's Chemistry Majors Panel?
7
What is the most abundant element in the universe?
Hydrogen
What catalyst was used in the aspirin synthesis reaction?
Esterification
What is the common name for luminescent semiconducting nanocrystals, for which Columbia's Prof. Louis Brus was awarded the 2023 Nobel Prize?
Quantum dots
True or False: Silver Chloride is insoluble in Water.
True
What is the strongest covalent bond according to Dr. Hait?
C O triple in carbon monoxide
Name six of the seven base SI units
the second for time, the meter for length or distance, the kilogram for mass, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity.
In the ferric chloride test, the color change to violet is an indication of which functional group?
Phenolic -OH group
Upon the application of a magnetic field, Ferrofluid develops characteristic nanoscale shape. What is this shape?
Spike-like
In TLC analysis, does a more polar molecule have a higher or a lower Rf value?
Lower
What is the name of the chemical method for creating peptides by assembling amino acids in a step-by-step manner while anchored to an insoluble solid support, such as a resin bead?
Solid-Phase Peptide Synthesis
The town of Ytterby, Sweden has four elements named after it. What are they?
yttrium (Y), terbium (Tb), erbium (Er), and ytterbium (Yb) are all named after Ytterby, and the elements holmium (Ho), scandium (Sc), thulium (Tm), tantalum (Ta), and gadolinium (Gd) were also first discovered there.
Why is d6-acetone used as the solvent for NMR, rather than normal acetone?
Deuterium nuclei do not appear in the 1H NMR spectrum
What is the chemical formula of eicosanethiol?
C20H42S
In a Wittig reaction, an aldehyde or ketone reacts with what type of reagent to generate an alkene product?
A phosphorous ylide
What is the current Carbon Dioxide emissions level (in ppm) on Earth in 2026? Answers closest to the nearest hundred ppm level will be accepted.
433 ppm
What was the first subatomic particle to be discovered and in what year? [closest answer will receive bonus points]
Electron by J J Thompson in 1897
In synthesis of aspirin from salicylic acid, what IR peaks will disappear/ appear for the product, aspirin as compared to the reagent, salicylic acid?
Disappear - broad phenolic OH stretch (~3200-3550 cm-1)
Appear - ester C=O stretch (~1750-1770 cm-1), Ester C-O stretch (~1200-1300 cm-1)
When a drop of water was placed on a self-assembled monolayer surface, it form an exact circular shape. Characterize this droplet.
Superhydrophobic
Predict the product, balance the chemical equation, and notate the chemical states of all species in the following reaction: Pb(NO3)2 (aq) + 2 KI (aq) --> ?
PbI2 (s) + 2 KNO3 (aq)
What proposed type of isomerization did Professor Gerard Parkin discredit?
Bond stretch isomerization
What is the only country named after an element?
Argentina (from argentum, or silver)