Recent Tutoring Session Reviews
"We reviewed the 1st exam and went over the problems. This covered acid and base chemistry, electronegativity, comparing pKas, determining equilibrium, Newman projections, and energy diagrams."
"We went over resonance structures, and how they demonstrate stabilization of radicals, cations, and anions. We also went over what makes a good resonance structure as well as the relative stability of allylic, benzylic, tertiary, secondary, and primary cations and radicals. He's still having trouble recognizing primary, secondary and tertiary carbons, so I pointed out that any carbon with a charge on it, either positive or negative automatically has 3 bonds. The cations have 3 bonds, and an empty p orbital which makes them trigonal planar, and the anions have 3 bonds and a lone pair which makes them tetrahedral. If you can't see three bonds, you can draw in the missing bonds to hydrogen which is generally not drawn in line structures."
"We went over some of his homework that revolved around acids and bases. We compared acids and compared bases to determine equilibrium arrows and rank acids and bases in order based on their pka values. He seemed to struggle with acids and bases, including in identifying what was as acid and what was a base. However, after a couple examples he was able to successfully identify acids and bases and then take it even further to be able to rationalize stronger and weaker acids and bases utilizing either pka values for acids or things like resonance and inductive effects for comparing bases."
"We went through different topics based on student's request. The student had questions regarding the mechanism of ether hydrolysis under acidic conditions. In addition, we discussed the stereochemistry of nucleophilic ring opening of epoxides. We covered Diels Alder reaction and retro Diels Alder retrosynthetic analysis. At the end of the session, the student was confident about the topics that were discussed in the session."
"We worked on identifying aromatic, antiaromatic, and nonaromatic structures with emphasis on their stability. We introduced strong and weak oxidizing agents like potassium dichromate and PCC. This included a review of E1 and E2 mechanisms."
"We worked specifically to cover differentiating between isomers and chiral compounds. The student was struggling with some concepts regarding the topic. He has practice problems to prepare for his exam."