Recent Tutoring Session Reviews
"We previewed the reactions of carbonyls, particularly the addition-elimination reaction, which is very well-conserved with all the carbonyl compounds. We noted nuanced differences between the carbonyl compounds, such as reactivities based on the groups adjacent to the carbonyl, and slightly different reactions. For example, the carboxylic acid may react both at the carbonyl site and as an acid, while acid chlorides mainly act as carbonyl attack centers with a good Cl- leaving group. There are several other reactions that need attention later on, but the addition-elimination reaction is the most prominent."
"The student had more questions from his review test related to thermal chemistry. We discussed how to draw diagrams of various system reactions and use arrows to solidify sign conventions. He also did several homework problems related to chapter 6."
"This was a good session. We worked with inter-molecular forces again. This time we dealt with vapor pressure (inverse to boiling point) that must overcome atmospheric pressure in order for a liquid to vaporize. We also looked at heat of fusion or needed heat to melt 1 mole of a substance. We defined polar bonds. We looked at hydrogen bonding, dipole forces, and London dispersion forces. These directly affect the melting and boiling points. Electronegativity is key to determine if a bond is polar."