Consider the structure of benzaldehyde and its three resonance structures. Add curved arrows to the resonance structures for benzaldehyde to illustrate the electron-withdrawing group's effect on the aromatic ring. The four resonance structures are shown.

classify the molecules of interest (i.e. para-aminophenol, acetaminophen, phenacetin) in increasing order of polarity? Rationalize these observations based on molecular interactions.

Please explain Frost Circles for aromatic systems and how they can be used to explain the stability of aromatic systems and the instability of anti-aromatic systems.

Draw both resonance structures of the anion formed by the reaction of the most acidic C-H bond of the compound below with base. Include all valence lone pairs in your answer. For structures having different hydrogens of comparable acidity, assume that the reaction occurs at the less-substituted carbon. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate resonance structures using the ↔ symbol.