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The dissolution of a salt is such a slow process for a couple different reasons. The amount of time dissolution takes is affected by the surface area and rate of solubility, which varies greatly depending on what the salt is dissolving in.
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∙ 9y ago
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∙ 13y agoBecause the sun can't evaporate it.
Evaporation is when a liquid changes into a gas. Evaporation is specifically when a liquid turns to gas on its surface without boiling. A liquid also turns to a gas when it boils, which is called vaporization, but this has to occur at a higher temperature than evaporation. A certain amount of energy is required for a solid to change to a liquid, and more is required for a liquid to change to a gas. This usually happens when the temperature increases. However, with a liquid, the molecules bouncing at the surface can sometimes transfer enough energy for the molecule to escape the liquid and become a gas. That means that if salt were a liquid, it could become a gas by either evaporating or vaporizing. The only problem with that is that table salt, which is NaCl or Sodium Chloride, doesn't become a liquid until it reaches 801 °C or 1474 °F and doesn't boil into a gas until it reaches 1413 °C or 2575 °F.
Wiki User
∙ 13y agowhen a solid dissolves in a liquid, it is still solid, just very very small and spread out. And gasses go past solids meaning they collide, but gasses cant carry objects. so when the liquid evaporates, the salt doesn't have anything to be dissolved in, and the vapor doesn't carry it, so just salt is left.
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∙ 14y agobecause salt vaporizes at a much higher temperature than water.
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∙ 13y agoAs water cools, the hydrogen bonds become stronger and are less able to break and reform. Because they cannot break, they cannot accept any ions from salts.
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∙ 13y agoSalt doesn't evaporate.
If you have salty water the water will evaporate and the salt will remain.
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∙ 12y agobecause NaCl dissociates into Na+ and Cl- ions in water
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∙ 13y agoSalt (table salt, sodium chloride) doesn't dissolve slowly in water.
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∙ 14y agoIt's too heavy to do so.
Wiki User
∙ 14y agoBecause it is salt it cannot evaporate!
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How long does it take Epsom salt to evaporate?
Epsom salt will never evaporate. If the Epsom salts are dissolved in water, the water will evaporate, leaving the dry salts covering the inside of the container.
A beaker contains table salt dissolved in water describe one method a student could use to separate salt?
If a saline solution (dissolved salt in water) is gently heated, the water will evaporate, leaving salt crystals behind.
Why salt can't be separated from salt water by using filter paper?
The dissolved salt will go right through. Anything dissolved in water can't be separated out using filter paper. However, if you evaporate off the water, the salt remains in the container, and you can separate it that way.
Does physical change occur when epsom salt is dissolved?
Yes. The way I think about it is if you can change it back (in this case, you could filter the epsom salt out, or evaporate the water, drying it) then it is a physical change.
Can water be used to separate salt from sugar why or why not?
A mixture of salt and sugar can be separated by using an organic solvent to dissolve the sugar. When the sugar is dissolved, it can be separated by filtering the salt from the liquid sugar,then recrystallise both solutions to from back their original crystals.
What evaporates faster sugar or salt?
Salt and sugar do not evaporate, but the water that they are dissolved in does.
Name the method by which salt dissolved in water is removed?
Evaporate the water, leaving the salt behind.
How long does it take Epsom salt to evaporate?
Epsom salt will never evaporate. If the Epsom salts are dissolved in water, the water will evaporate, leaving the dry salts covering the inside of the container.
Why do freshwater boils faster than saltwater?
fresh water doesnt have salt so it doesnt take as long to have the salt evaporate
A beaker contains table salt dissolved in water describe one method a student could use to separate salt?
If a saline solution (dissolved salt in water) is gently heated, the water will evaporate, leaving salt crystals behind.
How could you get back the dissolved salt?
Evaporate the liquid, possibly by heating it.
Why salt can't be separated from salt water by using filter paper?
The dissolved salt will go right through. Anything dissolved in water can't be separated out using filter paper. However, if you evaporate off the water, the salt remains in the container, and you can separate it that way.
What method will you use to separate salt and sand?
If you dissolve the salt and the sand in water the sand will stay beind and the salt would dissappear. But if you want the salt back you can evaporate it off, by boiling the water. (with the dissolved salt in it)
How could you get the salt crystals back once you had dissolved them in water?
You will have to let the water evaporate by drying in the air or heating slightly.
Does evaporation raise the salinity of water?
yes, evaporation raises salinity because salt doesnt evaporate like water
Is dissolved salt in ocean water an example of a chemical change?
No. It is a physical change. All you have to do to separate the two is to evaporate the water. There is no chemical change.
When water evaporates does the dissolved solid evaporate too?
Salts are not evaporated and only a very small amount of salt particles can be carried in the atmosphere.
