Unit 1
If a carbon is double-bonded to another carbon and sigma-bonded to two hydrogens, what is its hybridization?
It is an sp2 hybridized carbon.
What is the difference between regioselectivity and stereoselectivity?
Regioselectivity is based on carbocation stability, and stereoselectivity is based on how the substituents are added (anti-addition, cis-addition, etc.).
What is the rate law of an E2 reaction?
Rate = k[R-X][Nu]
How many bones are in the human body (adult)?
206
Which is more stable: a Newman projection in its staggered or eclipsed conformation? Why?
Staggered conformation is more stable because the electron clouds of the attached carbons are not overlapping as much.
Looking at the graph below, which product is thermodynamically favored? Which is kinetically favored?
Thermodynamically favored products are favored because they are formed at a lower temperature/enthalpy. Kinetically favored products are formed faster because they have smaller activation energies.
Explain the difference between oxidizing a primary alcohol with PCC and with KMnO4.
PCC oxidizes once to an aldehyde. KMnO4 oxidizes all the way to a ketone.
Which planet is closest to the sun?
Mercury
Draw a Lewis structure for the element: COCl2.
[use annotation feature]
Identify all the chiral centers in the molecule below and assign them as being R or S (if applicable).
There are 2 chiral centers. The first is R, and the second is S.
What is the reaction order for ether breakage?
3° > 1° > 2°
What number president are we currently on?
45th
Looking at the molecule below (1,5-dimethylcycylopentene), is the double-bond in E or Z?
It is in the Z conformation since the priorities are on the same side of the double-bond.
If a molecule has stereocenters in the conformation SRRR, what is the conformation of its enantiomer and two possible diastereomers?
Enantiomer: RSSS
Diastereomers: RSRS, SRRS
What is the purpose of the interconversions of keto to enol?
Enols are derivatives of an enolate. The conversion is required for certain reactions to happen (like the Aldol).
Finish the quote: The sash ringing, the trash thinging, mash flinging, the flash springing, bringing the crash thinging, the…
HASH SLINGING SLASHER
Use the planar molecule below to put the molecule in its chair conformation.
[use annotate feature]
For the molecule below, decide if the substituent on the benzene ring serves as an EWG or an EDG. Then describe its effect on the ring’s reactivity.
It is an EDG, so it increases the reactivity of the benzene ring.
What is the product of the following reaction?
[use annotate feature]
How do you prevent a sea bear attack?
Drawing an anti-sea bear circle in the sand and sitting in it.