A functional group is a certain group of atom within a molecule that is responsible for a characteristic of the molecule. Plenty of jajalger2018.orglogically active molecules save one or more functional groups. In Bis2a we will discuss the significant functional groups discovered in jajalger2018.orglogical molecules. This include: Hydroxyl, Methyl, Carboxyl, Carbonyl, Amino and Phosphate.
You are watching: Which chemical group can act as an acid?
A hydroxyl (alcohol group) is an –OH group covalently bonded to a carbon atom. The oxygen atom is much an ext electronegative than either the hydrogen or the carbon, i beg your pardon will reason the electron in the covalent bonds come spend much more time roughly the oxygen than roughly the C or H. Therefore, the O-H and also O-C bond in the hydroxyl group will be polar covalent bonds. The figure listed below depict the partial charges δ+ and also δ- linked with hydroxyl group.
The hydroxyl functional teams can type hydrogen bonds, displayed as a dotted line. The hydrogen shortcut will type between the δ- of the oxygen atom and also a δ+ that the hydrogen atom. Dipoles shown in blue arrows. Attribution: Marc T. Facciotti (original work)
Hydroxyl groups are very common in jajalger2018.orglogical molecules. Hydroxyl groups appear on carbohydrates (A), ~ above the R-groups of some amino acids (B), and on main point acids (C). Deserve to you find any kind of hydroxyl teams in the phospholipid in (D)?
The amine functional team can exist in a deprotonated or protonated state.
See more: How Many Miles Is A City Block S Equal One Mile? How Many Nyc Blocks Are In A Mile
Once protonated the nitrogen atom is tied to three hydrogen atoms and also has a positive charge. The deprotonated type of this team is neutral.Attribution: created Erin Easlon (Own work)