Question

A molecule or on that donates the hydrogen in a hydrogen bond is a hydrogen bond donor A molecule or son that binds to this hydrogen is a hydrogen bond acceptor. Specify the hydrogen bonding behavior of the 4 species below by selecting: donor for species that act as donors only acceptor for species that act as acceptors only both for species that act as both donors and acceptors neither for species that act neither as donors nor as acceptors. ö: -0. Hydrogen bonding behavior donor acceptor both Hydrogen bonding behavio neither HON CHE HEC CH Hydrogen bonding behavior Hydrogen bonding behavior

Answer 1

1) both. 2) both. 3) neither. 4) acceptor.

Hydrogen bonding occurs when H-atom, attached to an electronegative atom (specially E.ON) in a molecule, is attracted by an eletronegative atom(Fo, N) of . another molecule : Examples xample.com - H H This molecule is H-bond acceptor as its electronegative atom(x) :. binds to H-atom of another This molecule provides ... molecule. H-atom (bound to electronegative) atom) for H-bonding interaction) So, it is Hibond donor. - Hibonding behaviour is both (both donor and accepton). : The molecule contains two electro- negative oratom and' ratom Olllllllllif attached to one otatom. Hi... 0 Horimo one molecule acts as H-bonding donor while another one as . H-bonding acceptor. I n

Hydrogen bonding behaviour_ both HAW Chh The molecule contains electronegative. ... N-atom and H-atom (two) attached to Hi N-atom. 3 : TH Hot Petty . similarly, here also one molecule acts as accepton and another one as donor, more 3) ins eth Hydrogen bonding behaviour HC- B oer - neither. This molecule does not contain any mo electro- negative atom like F,o,n.o .... 4 ^ o . Hydrogen bonding behaviour - accepton. . This mobeule contains more electronegative o'-atom which can act as Hobond accepton.. No Hatom pre is attached to electronegative o atom