Chem 242 Midterm Jeopardy Template

Esterfication	camphor	aldol condensations	more camphor	random
100 What is carboxylic acid, alcohol, and acid catalyst reactants and reagents needed for Fischer esterfication	100 What is isoborneol because the hydride attacks from the bottom of the molecule, and isoborneol is less statically hindered major borneol product and why	100 What is no alpha hydrogens left to cleave reason aldol condensations can't always go backwards	100 What is reaction is over so fast that not much methanol has the chance to evaporate reason we don't need a reflex condenser	100 What is benzyne is super unstable and if it is not used immediately, it will decompose. It is unstable because of the triple bond in a six membered ring, causing ring strain. reason we can't isolate benzyne (molecular reasoning)
200 What is corrosive and highly reactive main safety hazard of h2so4	200 What is NaBH4 and Lialh3 (check this on slides) reagents that can be used to reduce camphor	200 What is intramolecular because you don't need to wait for two molecules to come into contact the faster of the 2 types of reactions (intra vs intermolecular) and why	200 What is time consuming compared to other methods and recrystallization reason we didn't use column chromatography as our technique to separate benzoin from benzil	200 What is positive if going from stable to unstable, endothermic enthalpy (deltaH)
300 no, a catalyst has no effect on the equilibrium position would increasing the amount of a catalyst increase product yield	300 What is camphor is insoluble in water and the NaBH4 would react with the water reason camphor reduction doesn't happen in a water solvent	300 we don't need all of the diphenylacetone to be fully deprotinated. as long as a small amount is deprotinated, the reaction will move forward and the hydroxide will be regenerated. the pka of water is 16. the pka of diphenylacetone is 19. how then is hydroxide a suitable base for aldol condensation	300 What is positive if going from fewer molecules to more molecules (disorder increased) Entropy (deltaS)
400 water would get in, pushing the reaction back towards the reactants. what would happen if we didn't use a drying tube	400 What is different molecular weights reason we can't tell if camphor or Borneol. is more stable based on heat of formation	400 yes they have different functional groups. Look for the presence of an OH group. would ir spect be useful in differentiating between pentanol and pentyl acetate
500 What is both are large non acidic compounds so neither will ionize and move to the water layer reason the acid base extractions were not successful in separating the reactant alcohol and product ester	500 What is another name of heat of formation hartrees	500 OH peaks are heavily influenced by hydrogen bonding, as it increases the shielding and therefore the ppm. CH bonds are not dependent on inter =molecular forces. Webmo just looks at one molecule which is why it is accurate in CH but not OH peaks. why is webmo accurate in deterring CH peaks but not OH peaks?

CHEM 242 MIDTERM

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