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is water the only liquid that salt makes denser?
- Jane Doe (age 15)
Mason, Ohio, Austraila
No. I believe that most salts will increase the density of alcohols etc. in which they dissolve. Generally salts only dissolve well in polar liquids, since in non-polar liquids the electrostatic cost of separating the opposite charges is high.
Slightly off-topic curiosity: Not all salts increase the volume of water. There's at least one, MgSO4
, which slightly lowers the volume of water. So that makes it increase the density even more.
(published on 12/12/10)
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