2E.27A

[JamieVu_2C]

For part A, if you weren't given the information that C5H5N, pyridine, has a similar structure to benzene, how would you know to draw it as a ring structure?

[sarahsalama2E]

Typically when there are a lot of carbons in a molecule, it forms a carbon structure, like a benzene ring. But however, it can also form chains. I have noticed that typically when there are more than 4 carbons, a ring is formed. Also, pay attention to how the molecule is written out. The way that pyridine is written kind of lends itself to a ring like structure.