how to separate salt from water
Answers
I Preferred a basic method of separating salt from water
1.Heat water and add salt to make saltwater. It's easy to see the principals of evaporation in action by performing this simple experiment. To start, all you'll need is a little ordinary table salt, some tap water, a saucepan, a little black construction paper, and a stove. Add a few cups of water to the pan and place it on a hot burner. Wait for the water to heat — it doesn't necessarily need to boil, but the hotter it gets, the more quickly it will dissolve the salt.
The reason hot water is best for dissolving salt (and other chemicals) has to do with the motion of the molecules making up the water. When the water gets hot, these molecules move faster, running into more salt molecules and pulling the salt crystals apart.
2.Add salt until it no longer dissolves. Continue adding small spoonfuls of salt and stirring to dissolve them. Eventually, you'll reach a point at which the salt won't dissolve any more, no matter how hot the water is. This is called the water's saturation point. Turn the stove off and let the water cool slightly.
When water reaches its saturation point, it no longer has any ability to dissolve salt at a molecular level — so much salt has dissolved that there is no longer any chemical potential for the water to pull apart new salt crystals.
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