Login

Join for Free!
118874 members


NaCl dissolved in water

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

Moderator: BioTeam

NaCl dissolved in water

Postby amolvaidya06 » Sun Jan 28, 2007 6:26 am

In biology we learned that molecules often do not share the same properties of the individual elements they are composed of. We also learned that when table salt is dissolved in water, it breaks apart into Na and Cl atoms. Why is it, then, that when salt is dissolved in water that it still tastes salty?
amolvaidya06
Garter
Garter
 
Posts: 7
Joined: Sun Jan 28, 2007 6:10 am

Postby honee_v » Sun Jan 28, 2007 8:08 am

The taste buds need to interact to both sodium and chloride ions at the same time in order to 'register' a salty taste.. sodium and chloride ions are still present in water only they are apart at a proximal distance.. so definitely dissolved table salt in water tastes salty...
"Why you care about small things? World very simple place...
World only have two things: Things you can eat and things you no can eat."

- Quina Quen (ffix)
User avatar
honee_v
Site Admin
Site Admin
 
Posts: 322
Joined: Thu Jun 22, 2006 9:28 am

Re: NaCl dissolved in water

Postby sdekivit » Sun Jan 28, 2007 9:35 am

amolvaidya06 wrote: when table salt is dissolved in water, it breaks apart into Na and Cl atoms.


i don't like this sentence, because atoms are uncharged and thus insoluble in water (just like molecules as I2: molecular compunds with non-polar bonds)
sdekivit
King Cobra
King Cobra
 
Posts: 586
Joined: Sat Jul 30, 2005 7:16 pm
Location: holland


Postby Dr.Stein » Tue Jan 30, 2007 9:07 am

I think NaCl ----hydrolysis----> Na(+) + Cl(-) is much better :)
Image
User avatar
Dr.Stein
King Cobra
King Cobra
 
Posts: 3501
Joined: Thu Jul 07, 2005 7:58 am
Location: 55284 Yogyakarta, Indonesia

Postby Dustfinger » Tue Jan 30, 2007 9:19 am

Hydrolysis ? Is that not something else ?
Image
Image
User avatar
Dustfinger
King Cobra
King Cobra
 
Posts: 1448
Joined: Thu Aug 10, 2006 7:22 pm
Location: Somewhere in the endless Universe

Postby Dr.Stein » Tue Jan 30, 2007 9:46 am

I think it is a proper word. I know that one the meaning of "hydrolysis" is "A chemical reaction that uses water to break down a compound" or am I wrong? :roll:
Image
User avatar
Dr.Stein
King Cobra
King Cobra
 
Posts: 3501
Joined: Thu Jul 07, 2005 7:58 am
Location: 55284 Yogyakarta, Indonesia

Postby MrMistery » Tue Jan 30, 2007 9:56 am

from what i know, you are wrong doc. hydrolysis is indeed a chemical reaction that uses water to break down something, but water is a reactant in the hydrolysis reaction. think of the hydrolysis of an ester into an acid and an alcohol: the atoms in the water end up in the final products.

When you put NaCl into water it dissociates, i think that is the best term.. And yeah, it does not dissociate into atoms, but instead ions.
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
User avatar
MrMistery
Inland Taipan
Inland Taipan
 
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)

Postby Dustfinger » Tue Jan 30, 2007 10:00 am

Yes, exactly, hydolysis is not what you mean, Doc !
And Andrew agrees.
Image
Image
User avatar
Dustfinger
King Cobra
King Cobra
 
Posts: 1448
Joined: Thu Aug 10, 2006 7:22 pm
Location: Somewhere in the endless Universe


Return to Molecular Biology

Who is online

Users browsing this forum: No registered users and 1 guest