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Prevent evaporation? Answered

I am planing on doing an experiment but I need to make sure that none evaporates over a few ours, how do id do this?

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iceng
iceng

Best Answer 9 years ago

I presume you are concerned about H2O evaporation.
What does Not work is enclosing a smaller volume around your experiment.
The easy key is to find an immiscible liquid to float on top
( less dense ) of your H2O and block evaporation. 
After that finding more solutions ( keys ) starts to get NASA complicated.

A

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aasil the don
aasil the don

5 years ago

we can also stop the evopartion by poring some amount of oil in water

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rickharris
rickharris

9 years ago

It dep3nds on how you define none evaporates - eg if you just need to keep it in a container then seal the top - if you mean none to leave the body of liquid then much harder.

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aeray
aeray

Answer 9 years ago

Excellent unintentional 1337-speak, Rick.

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rickharris
rickharris

Answer 9 years ago

Doh! :-) editing replies would be nice.

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acidbass
acidbass

9 years ago

Put some clingwrap (or plastic wrap) over the top of what you are doing

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Arano
Arano

9 years ago

it's easy: just make sure the partial pressure of your substance is higher than its vapor pressure

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seandogue
seandogue

9 years ago

Keep the temperature low and keep the fluid in a sealed container.

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FoolishSage
FoolishSage

9 years ago

Keep the surface of your fluid covered and keep it as cold as possible

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steveastrouk
steveastrouk

9 years ago

If its water, there are a couple of classic methods. Balls and oil.