For the same reason that salt melts ice. It goes in to solution with the water by lowering it's freezing point by disrupting the bonding of the electrons in the valance ring of the H2O atomic bond.
2006-10-05 17:35:23
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answer #1
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answered by Dusty 7
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Through a process known as freezing point depression. Pure water behaves a certain way in terms of boiling, evaporating and freezing. Once a solution is made with salt in it, the characteristics change, including boiling temperature, evaporative energy and freezing point. The crystal structure of pure water does not have anything to deal with from a physicochemical point of view other than other water molecules. Any other types of molecules present change the free energy state of the overall solution.
2006-10-06 08:10:39
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answer #2
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answered by Gene Guy 5
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http://www.madsci.org/posts/archives/mar98/890115623.Ch.r.html
"The reason why salt lowers the freezing temperature of water is a bit more
difficult to explain without discussing more complex chemistry. Basically,
pure water, H2O, is a different substance than salt water, such as NaCl-
H2O. As different substances, they have different chemical properties.
Salt "gets in the way" of the interactions between H and O, making it
harder for the H and O to bond as ice.
You can do very simple processes in the lab or classroom illustrating this
principle. Fill two containers with water and put table salt in only one
container of water. Put both containers somewhere cold (in the freezer or
even outside over night). See what happens!"
2006-10-06 00:27:00
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answer #3
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answered by I am Sunshine 6
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Salt lowers the freezing point of water.
2006-10-06 00:27:22
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answer #4
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answered by Anonymous
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salt in water produces ions such as Na+ and Cl-, these ions attract the two atoms constituting water H and O differently, this creates a different H2O molecule, i.e. the charges are not the same, hence a different physical property of the water, in fact it is no longer water since it is now a solution of salt in water.
Hope it makes sense
2006-10-06 00:32:06
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answer #5
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answered by Yacine B 3
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I believe it raises the temperature of water. Like adding salt to water makes it boil faster, I have no idea what the mechanism is among the different elements
2006-10-06 00:35:22
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answer #6
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answered by Anonymous
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NaCl dissolved in water, hydrated Na and Cl ions make it harder for water to form all 4 H-bonds (ice).
2006-10-06 00:33:54
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answer #7
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answered by Brian 3
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cause of the chemical imbalance
2006-10-06 00:27:20
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answer #8
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answered by 0o_fEmMeLiCoUs_o0 2
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