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Raining of non-water liquid

05/24/2009 8:08 AM

There is usually cloud and raining of water in the world.

I wonder why there is not cloud and raining of other liquids those evaporized at the room temperature same as water, such as ethanol.

Anything about thermodynamic, pressure of liquid, gas ?

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#1

Re: Raining of non-water liquid

05/24/2009 10:12 AM

The vast preponderance of free liquid surface available to evaporation just happens to be water.
If there were oceans of some other liquid then there would be other rain.
The great oceans of liquid Nitrogen have all evaporated and it's not cold enough for it to fall as 'rain'.

Del

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#2

Re: Raining of non-water liquid

05/24/2009 10:46 AM

Well when a jetliner expels its lavatory wastes.......I suppose that doesn't count....other than that...

Anything about thermodynamic, pressure of liquid, gas ?

Find materials that has the same properties of water.

phoenix911

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#3
In reply to #2

Re: Raining of non-water liquid

05/24/2009 7:29 PM

There's nothing sadder than blue rain. Usually it's frozen around these parts.

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#4

Re: Raining of non-water liquid

05/24/2009 11:04 PM

How about some acid rain

Regards JD.

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#5

Re: Raining of non-water liquid

05/24/2009 11:46 PM

If there was enough ethanol in the atmosphere, than maybe it would rain ethanol.

But i guess it would oxidize quit quickly. you have to go to Venus or Jupiter (or any other gas planet) to get a different "kind" of rain

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#19
In reply to #5

Re: Raining of non-water liquid

05/26/2009 4:00 AM

<...maybe it would rain ethanol...>

Now there's a thought [hic!]!

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#6

Re: Raining of non-water liquid

05/24/2009 11:48 PM

Other common liquids we see evaporate (like ethanol, acetone, blended gasoline and other common solvents) are in the atmosphere at such tiny percentages that their partial pressures are way below the levels at which they can condense at the temperature present in the atmosphere. So they will always remain as gasses to the extent that they are not soluble in the liquid water that makes up rain and fog or solid snow,hail, etc.

Ed Weldon

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#18
In reply to #6

Re: Raining of non-water liquid

05/25/2009 11:35 PM

Temperature above is lower enough to make many other volatile liquid to get condensed and but other than water they may not from large droplets of the size that causes rain. Smaller droplets float easily as you see mist generated from small water droplets.

Acid rain is simply due to gases getting mixed up with water droplets and other liquid droplets if trapped in water droplets then will also come down along with rain.

Planet earth loses some of its escaped gases and they contain volatile liquid formed gases and also some water. Not all water will come down as rain, and some will escape the earth.

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#7

Re: Raining of non-water liquid

05/25/2009 10:43 AM

hi wt,

All rain has more than just water in it. Depending on where you are it can have soluble vapors in it, salt, seeds, and also solids such as sand etc.

Not sure where you got the idea 'rain' was water only?

Take care, and no insult intended................

bb

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#9
In reply to #7

Re: Raining of non-water liquid

05/25/2009 11:31 AM

Not sure where you got the idea 'rain' was water only?
I'd guess the idea comes from the fact that it's effectively 'distilled' and one would therefore think it would be pure....of course it has plenty of time to pick up impurities on it's travels.
I s'pose it is relatively pure...if you had the choice of drinking freshly collected rainwater, or water from a pond or river which would you choose?
Del

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#10
In reply to #9

Re: Raining of non-water liquid

05/25/2009 11:56 AM

I think it would depend on who was "upwind" of me and what the pond looked like

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#11
In reply to #9

Re: Raining of non-water liquid

05/25/2009 1:06 PM

careful how you use the term pure....purified water is very corrosive.

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#12
In reply to #9

Re: Raining of non-water liquid

05/25/2009 1:26 PM

Hello Del,

Hope you are fine Del? Been a while since we 'spoke'? well I would choose rain water. But the OP's question inferred there was nothing else which rained on earth. Acid rain is pretty nasty stuff and that is just one gas which mixes with water to make the acid...co2 I believe.

bb

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#14
In reply to #12

Re: Raining of non-water liquid

05/25/2009 1:58 PM

Yeah, fine ta', You are quite right, I was just trying to hypothesise as to why one might think rain was pure H2O.
Del

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#15
In reply to #14

Re: Raining of non-water liquid

05/25/2009 2:03 PM

'cause most folks no thinkum so good?

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#17
In reply to #15

Re: Raining of non-water liquid

05/25/2009 2:09 PM

Hi edignan,

Yes, I think that is right in a nutshell!

Take care...........bb

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#16
In reply to #14

Re: Raining of non-water liquid

05/25/2009 2:07 PM

Hi Del,

I don't like those big words like 'hypothesize', I can never type or say 'em! LOL.

Take care..........

bb

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#8

Re: Raining of non-water liquid

05/25/2009 10:49 AM

The only place you can condense any liquid, (water, ethanol, gasoline, etc.) is where the air is supersaturated with the vapor phase of the liquid. On earth, that typically occurs where warm moist air rises and is cooled below the saturation point (dew point). No other liquids exist in the atosphere at that concentration (yet).

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#13

Re: Raining of non-water liquid

05/25/2009 1:39 PM

Apparently it rains methane on Titan. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WGF-4TY476M-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=7339cbde360cd98de8410659033a93f1

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