This quantity was first introduced in the paper “The osmotic pressure of concentrated solutions, and the laws of the perfect solution”. For 10 points each:In general these questions seemed fine. The Henry's law part seemed a little weird; could you post it? I think Sine-Gordon would be a fine hard part for that bonus, with Frenkel-Kontorova pushing it. I think Jones calculus is possibly on the easy side as a hard part, and I think Brewster's angle is definitely on the easy side as a medium part.
A. Name this “corrected pressure” which is equivalent to pressure for an ideal gas.
B. This rule states the fugacity of a component in an ideal mixture is equal to its fugacity as a pure component multiplied by its mole fraction.
Answer: Lewis-Randall rule
C. While the Lewis-Randall rule is useful at high concentrations, this other law is typically used to find the fugacity at low concentrations.
Answer: Henry’s law
They are exemplified in a reaction that uses a strong Bronsted or Lewis acid to convert divinyl ketones to a form of pentenone. Taking into account frontier orbitals, they classify certain systems as “symmetry allowed” and are supported by extended Huckel theory. They note that the reaction of compounds containing 4n+2 pi electrons will be a disrotatory process, while those containing 4n pi electrons will undergo a conrotatory process. This can be seen in the reaction of butadiene to cyclobutene, an electrocyclic process. For 10 points, identify this set of rules used for predicting the stereochemistry of pericyclic reactions.Aaron, can you post the Woodward-Hoffman and the cyclohexene tossups?
Answer: Woodward-Hoffmann rules
CeNA oligonucleotides are characterized by the presence of this compound, which can be added by syringe to Wilkinson’s catalyst to form an addition product. This compound’s ketone derivative is produced in the aldol condensation step of the Robinson annulations and can be synthesized from phenol in a variant of the Birch reduction. It is typically synthesized in beginner chemistry labs by dehydrating a closely related alcohol compound with a phosphoric or sulfuric acid catalyst and it is also the final product in a reaction that prefers an endo product. For 10 points, identify this compound that results from the reaction of 1,3 butadiene and ethane in the Diels-Alder, a six carbon ring with one double bond.
Well, I wrote the Gran plot tu specifically for the finals packet, where it seemed appropriate. Seeing that this did not happen, I will agree that it was too difficult for a regular packet.Wow, Gran plots are really hard. I'm not sure how much they're actually used either - if you have firsthand experience with it feel free to dispute me.
I specifically wrote the hard parts to be hard, but answerable, but perhaps I missed my mark. I thought the discovery of the quadruple bond in rhenium was a pretty big deal, but maybe I was wrong. Clementi and Raimondi came up a lot on university pages and seemed like a natural third part for the bonus. Ugi reaction is definitely hard, but this was intended for the finals packet. Frenkel-Kontorova was given to me by Dwight, so I really can't comment on that.There are some pretty crazy hard parts here, like rhenium, Clementi/Raimondi, Ugi reaction, and Frenkel-Kontorova (though you could argue that last one is important).