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Topic: solution  (Read 4755 times)

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Offline alex00

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solution
« on: August 11, 2013, 12:02:33 PM »
hi guys
Is there any material that soluble in water at ambient or low temperature and insoluble at elevated temperature?

Offline curiouscat

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Re: solution
« Reply #1 on: August 11, 2013, 12:27:49 PM »
hi guys
Is there any material that soluble in water at ambient or low temperature and insoluble at elevated temperature?

Lots. Most gases. Some solids.

CO2?

Offline alex00

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Re: solution
« Reply #2 on: August 11, 2013, 12:34:33 PM »
which solids? is there any phrase for it?


Offline alex00

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Re: solution
« Reply #3 on: August 11, 2013, 12:59:55 PM »
NH3 has good rate of solubility from ambient T to elevated T. But which solids is there like it?

I am thinking about using it for crystallization. at high T we could dissolving our crystal raw materials (the solid not solved at high T) when the solution cooling down the solid dissolve in to the water and force the crystals out .
I know it`s thermodynamic is important .

Offline curiouscat

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Re: solution
« Reply #4 on: August 11, 2013, 01:11:03 PM »
which solids? is there any phrase for it?

Inverted solubility.

Cerium Sulfate. Sodium Sulfate.

Offline curiouscat

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Re: solution
« Reply #5 on: August 11, 2013, 01:13:39 PM »
Calcium Sulfate too I think.

Offline alex00

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Re: solution
« Reply #6 on: August 11, 2013, 01:18:36 PM »
Cerium Sulfate. Sodium Sulfate.

cerium sulfate good but it`s rate is low. and about sodium sulfate it is correct higher than 30C

Offline alex00

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Re: solution
« Reply #7 on: August 11, 2013, 01:37:09 PM »
CaSo4

Offline alex00

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Re: solution
« Reply #8 on: August 11, 2013, 01:44:23 PM »
also MnSO4

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