Learn more physics!
How does Anti-freze lower the freezing temperature of water? How does this process differ from desolved salt in water ?
- Oguz (age 56)
Taslica Village, Marmaris, Turkey
The basic way that anti-freeze works is the same as the way salt works
to lower the freezing point. Anything dissolved in the water will lower
its freezing point. (We've discussed that effect in other answers on
I believe that antifreeze chemicals are chosen to be ones that
won't trigger corrosion of metals as much as salt will, and also that
won't form solid deposits if some of the liquid evaporates.
But your hunch that the basic process is the same is exactly right.
(republished on 07/25/06)
Follow-up on this answer.