Biology-Online • View topic - Clathrate, Hydration Shell

Join for Free!
122499 members

Clathrate, Hydration Shell

Discussion of all aspects of cellular structure, physiology and communication.

Moderator: BioTeam

Clathrate, Hydration Shell

Postby physgirl » Sun Sep 02, 2007 3:24 am

What's the difference between a clathrate and a hydration shell?

Is it right that in a hydration shell the water molecules are coming in and out, replacing the molecules that were already a part of the shell, "dynamic", but in a clathrate, everything is fixed and ordered (no replacement of molecules going on)?

I'm not really sure if I follow my book's descriptions of the two...
Posts: 3
Joined: Sun Jul 15, 2007 5:21 pm

Postby Jammerz » Wed Sep 05, 2007 2:35 am

You're mostly right...

a hydration shell is the result of a polar solvent (in this case water) orienting itself around ions due to the charge. The ions are essentially surrounded by a "shell" of water. The "shell" is not fixed, and molecules may move around, about, in and out... but they all orient themselves around the ion based on its charge.

A clathrate structure is a lattice structure... fixed and ordered like you said. Solid water (aka ice) forms a clathrate structure.
Death Adder
Death Adder
Posts: 77
Joined: Thu Mar 22, 2007 4:02 am
Location: USA

Return to Cell Biology

Who is online

Users browsing this forum: No registered users and 1 guest