is it possible to boil water at room temperature(20 degree celcius) without heating it?explain?

Answer 1

If you decrease the pressure enough, the boiling point of water could drop to 20C.

This is because water (or any liquid) "boils" when its vapour pressure is equal to the pressure of the atmospher around it. So when the two pressures are equal, molecules of water are able to escape the liquid into the atmospher.

To boil and escape into gas phase, the molecules must over come the attraction forces that exist between them. This explains why the bp of water is so high to begin with: H2O is a polar molecule which readily forms Hydrogen bonds amongs themselves. While H-bonds are weak in small #'s, in large #'s (like in a beaker of water) the are strong enough to elevate H2O's bp to 100C.

So, to depress H2O's bp to 20C you would have to decrease the outside pressure. You would probably have to take it into a vacuum or something to do this.

(Also, adding solutes (ie: salt)can decrease bp, however, I don't think you could decrease it to 20C via this method alone)

Answer 2

I know many people who suggested it not being possible to boil water at room temperature(20 degree celcius) without heating it

Answer 3

I don't see why there might not be any problems to boil water at room temperature(20 degree celcius) without heating it

Answer 4

yes I think it is probable to boil water at room temperature(20 degree celcius) without heating it

Answer 5

Many people will jeer it off as unimaginable but I suppose it might be feasible to to boil water at room temperature(20 degree celcius) without heating it

Answer 6

to boil water at room temperature(20 degree celcius) without heating it simply cannot be possible

Answer 7

Of course, just bring it to a high enough elevation and it will boil at lower and lower temperatures - or put it into a vacuum chamber for the same effect.

In a pure vacuum liquid water does not exist, and the boiling and freezing points are the same; adding a little heat to some ice in a vacuum causes it to turn directly into vapor, or "sublime."

You might have noticed that cookbooks tell you to increase the boiling time for some recipes if you live in mountainous areas where water actually does boil at lower temperatures.

Answer 8

When I was in High school chemistry the teacher placed a beaker of water on a plate with vacuum holes and covered it with a glass bell. As the air was sucked out it caused a void to form. You've maybe heard the term "Nature abhors a vacuum."? Well it does and in order for the vacuum to go away it must be filled with something. The only thing available is the water but the only way water can fill such a space is as a gas. So it boils, rapidly evaporating into vapor to fill the vacuum. If you turn off the vacuum pump the boiling stops very quickly, as it doesn't take very much water to make enough vapor to fill even a large space.

Answer 9

Water is a strange thing... but thats another subject. Anyways, water exists in a liquid form, mainly because of air pressure. At sea level there is more air pressure acting on the molecules, holding them together more tightly. So it takes more heat to 'excite' the molecules apart. Now If you slowly removed the air pressure around the water, at some point it would boil at room temp.

Answer 10

At 20 degree centigrade water boils at a pressure of

0.0230553atmosphere [standard]

It is 23.361403 milli bars.