Adding salt to freezing water lowers the temperature at which the
solution will freeze. In other words, adding salt to ice may make the
ice melt not because the salt raises the temperature but rather
because a new solution is formed that has a lower freezing point.
"Pure water freezes at 32 F or 0 C. Salt water freezes at a lower
temperature though, about three or four degrees lower."
source: Re: How does salt affect water?
">Does salt water freeze, if so, at what temperature? Are icebergs fresh
Yes, salt water freezes. The temperature at which this happens depends
on the salinity (amount of salt in the water). Ocean water is about
3.5% salt (mostly sodium chloride, just like table salt). At this
salinity, the freezing temperature is about -2 degrees Celsius (about
28 degrees F), so sea water can stay liquid for a little while after
fresh water would freeze."
"Water freezes at 32 degrees F. (0 degrees C ) When a compound like
salt is added to the ice, a new solution with a lower freezing
temperature than ice is
formed. This is why salt is added to ice to make ice cream. A common
student misconception is that salt raises the temperature and causes
the ice to melt. In reality a new solution is formed that has a lower
freezing point than ice."
"...salt water freezes at a lower temperature than ordinary water. In
other words, it has to get colder than 32° F (O° C) before salt water
"What effect does salt (table salt) water have on ice? Is there a
difference between salt (table salt) water and rock salt used to melt
ice on the roads?
Salt water freezes at a lower temperature than regular water. Adding
salt water to ice will melt some of the ice as the molecules mix with
the salt solution."
"salt water freezes"
I hope this helps.