Login

Join for Free!
118331 members


Van der Waals forces

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

Moderator: BioTeam

Postby victor » Sat Feb 11, 2006 12:16 pm

Yup, hydrogen bond is one of them....
Intramolecular force is a force energy that's contained inside one molecule...Example, covalent bond and ionic bond.
i.e. CH4

Intermolecular force is a force energy that's formed by at least 2 molecule.
i.e. CH3COOH---OHOCCH3
Q: Why are chemists great for solving problems?
A: They have all the solutions.
User avatar
victor
King Cobra
King Cobra
 
Posts: 2668
Joined: Sat Apr 30, 2005 12:01 pm
Location: Yogyakarta, Indonesia..

Postby zami'87. » Sat Feb 11, 2006 8:20 pm

Van der Waals forces are much weaker than forces that enable hydrogen bonds.VDW f can act between nonpolar molecules and temporarily form dipoles(consequence of moving of electrons). eg in H2,Cl2,F2...
Every man is a star whose light can make shadows dance differently and change our view of landscape permanently***
User avatar
zami'87.
Coral
Coral
 
Posts: 257
Joined: Sat Mar 05, 2005 6:56 pm
Location: Serbia

Postby Aerlinn » Sun Feb 12, 2006 9:46 am

Van der Waals forces are much weaker than forces that enable hydrogen bonds.

You contradicted what Victor said. Are Hydrogen bonds Van der Waals forces? :S

Intramolecular force is a force energy that's contained inside one molecule...Example, covalent bond and ionic bond.
i.e. CH4

Intermolecular force is a force energy that's formed by at least 2 molecule.
i.e. CH3COOH---OHOCCH3

Thanks for explaining that to me :)
The wonders of so-called life...
Aerlinn
Death Adder
Death Adder
 
Posts: 68
Joined: Wed Oct 12, 2005 11:34 am


Postby victor » Sun Feb 12, 2006 11:08 am

Hydrogen bond are one of the intermolecular force (means it's one group with VDW force) but the energy stored inside the hydrogen bond is more than any other intermolecular force. This is because H atom get binded with O atom which is very electronegative.
Q: Why are chemists great for solving problems?
A: They have all the solutions.
User avatar
victor
King Cobra
King Cobra
 
Posts: 2668
Joined: Sat Apr 30, 2005 12:01 pm
Location: Yogyakarta, Indonesia..

Previous

Return to Molecular Biology

Who is online

Users browsing this forum: No registered users and 3 guests