very breifly, please. THanks! :D
2007-06-06 07:19:00 · 3 answers · asked by becky c 2 in Science & Mathematics ➔ Chemistry
Their large and elongated structure.
2007-06-06 07:28:50 · answer #1 · answered by ag_iitkgp 7 · 0⤊ 1⤋
As chemical size increases so do the van der waals forces. Because polymers are very large in size (repeating monomers) they are able to polarize easily without destabilizing.
A good example of this are hydrocarbons. Hydrocarbons essentially only exert van der waals forces intermolecularly. Propane and butane are smaller hydrocarbons (c=3,4 respectively) and exist as gasses.
Octane (gasoline) is slightly larger and has slightly great intermolecular van der waals forces and this exists as a volitile liquid.
Lastly are petroleum jellys. These are larger hydrocarbons (c=30-60) and have strogner van der waals forces which cause it to exist as a gel/solid.
So you can see that as size increases in a molecule, the van der waals forces increase as well.
2007-06-06 14:35:50 · answer #2 · answered by Kyle M 2 · 1⤊ 0⤋
Totally non-polar, but huge, molecule. So vdW forces are also huge.
2007-06-06 14:28:52 · answer #3 · answered by Gervald F 7 · 1⤊ 0⤋