will a dissolved chemical evaporate with water when heated?

Question

Im am doing a sicnece project with a group and i need this anwser really fast

I am doing a science project with a group so i need some detail plz ty ;)

Answer 1

No.

Any chemicals dissolved in the water with a boiling point below 100°C at sea level will boil before the water, and any chemicals with a boiling point higher than 100°C will remain as a residue after the water is boiled off.

Once the water starts boiling, the steam that is produced is 100% pure water. A rare exception to this would be if the water temperature was increased very rapidly to the water boiling point of 100°C at sea level, then any chemicals present in the water may not have had time to evaporate or boil off before the water started boiling. I am not aware of any chemicals, compounds, or elements that share the same boiling point as water.

Answer 2

Depends on the chemical. If it's truly dissolved like sodium chloride (common salt), Then it will remain behind after evaporation. However if the chemical added to the water produces a chemical reaction, ie combines with the water to make something else, then the new water mixture will evaporate including the chemical. If the chemical changes to a liquid and, itself, evaporates at a lower temperature than boiling water then it will evaporate first. A good example of this is alcohol based chemicals including ethyl alcohol. By the time the water has boiled all the ethyl alcohol will have gone too. Try adding fruit cordial to some water an boiling it to see what is left. Much of the cordial will vanish but may leave a syrup type residue. This chemical, albeit organic, has both features.

Answer 3

Yes it will.
Ofcourse, the nature of the chemical will decide many properties of evapouration like,
> rate of evap. of the chemical
> amount of chemical evapourated
There are chemicals which are separated from water by evapouration by boiling(& then condensing).
There are also certain chem+water combinations which cannot be separated completely because they form a special kind of mixture called

>>AZEOTROPIC mixture( constant boiling mixtures)
that is,here both water and the chemical may boil at same temperatures and on condensing we will again get a mixture of the previous composition.

Answer 4

If the boiling point of the chemical is higher than the boiling point of water, the chemical will not evaporate.

Answer 5

It sounds like what you are trying to do is something like fractional distillation. Check out the link below to Wikipedia on that and see if it gives you the details you are looking for, or links to something that does -- good luck!

Answer 6

What chemical are you using?
If you have chlorine in water, it will evaporate before u even boil it, but if you have NaCl( table salt) it won't...
so WHAT CHEMICAL ARE YOU USING?

Answer 7

No- try it with salt water. The salt remains.