Hydrogen Bonding Flashcards
1
Q
Name 4 places hydrogen bonding can occur
A
1) hydroxyl group of Alkane and water
2) carbonyl group of ketone and water
3) peptide groups in polypeptide
4) between bases of DNA
2
Q
Hydrogen bonds are what in comparison to OH abounds
A
Larger and weaker than covalent
3
Q
Hydrogen bonds are how much covalent and how much electrostatic
A
10% covalent due to overlap in bonding orbitals
90% electrostatic
4
Q
When are hydrogen bonds the strongest (orientation) and why
A
When H atom and the 2 atoms that share it are in a straight line - maximises electrostatic interaction
5
Q
Hydrogen bonding is between what
A
An electronegative atom (hydrogen acceptor such as oxygen/nitrogen with lone pair) and a hydrogen atom covalently bonded to another electronegative atom in the same molecule
