Chemistry

Questions tagged [evaporation]

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Evaporating volatiles to get bitumen powder

I'm trying to source gilsonite/bitumen powder in Canada. It's available with costly shipping, but I also see that foundation coating is 75%-90% bitumen, 3-5% sulfur, 1-2.5% xylene and naphta solvents. ...
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Dispersal of pyrethroid insecticide by vaporization - role of petroleum distillate in distribution in air

I live in Indonesia where there are many mosquitoes and products sold for their control. One such product is this one: The product contains 22ml of liquid, the contents of which likely vary slightly ...
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Isolating additives in alcohol products

Given an alcohol-water solution (Liquor products) that may have additives and/or may have been aged in wood, I'd like to boil off the alcohol and the water to leave behind the various additives in a ...
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does NH4OH lose concentration when it is open? [closed]

I get a lot of variation on NH4OH titration and I am curious if anyone knows if NH4OH at concentration greater than 20% will evaporate the NH3 and decrease in concentration if it is open and at room ...
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194 views

How to make acetic acid more volatile so that it can be removed by vigorous aeration of an acetic acid-water mixture? [closed]

I want to remove acetic acid from a mixture of acetic acid and water by aeration. The concentration of acetic acid is 200 ppm (mg/L). The pH of the water is more than 5. I want to reduce the acetic ...
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49 views

Why does Vapor Pressure decrease on addition of solute? [duplicate]

Consider a vessel with a volatile liquid in it. Let's say it has a vapor pressure $P^0$ when it is pure. Now a non-volatile solute is added to it. Its vapor pressure decreases as $P^0\chi_{solvent}$. ...
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322 views

Detailed kinetic explanation for vapor pressure reduction by dissolved solute?

The following problem was asked in JEE Mains 2020 (Sept 2, Shift 1), An open beaker of water in equilibrium with water vapor is in a sealed container. When a few grams of glucose are added to the ...