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Is there a way to get water to 100 degrees c and not boil , i think i know , as you can also get water to boil at 40 degrees c , under certain circumstances.

2007-09-14 12:59:30 · 23 answers · asked by 株式会THE CITADEL 株式会 4 in Science & Mathematics Physics

Cheers guys , so it is at high pressure water will boil at a higher degree and at low pressure it will boil at a much less degree. .

2007-09-14 13:16:17 · update #1

23 answers

What no one hasn't mentioned (which I thought I might add) is that 100 degrees c is only the boiling point for PURE water.

2007-09-14 13:12:58 · answer #1 · answered by Just some guy 6 · 0 0

Yet another answer which no one has mentioned is that water in a very clean vessel with little or no vibration can be superheated above 100C without boiling. If disturbed, it will erupt violently ("bumping") as the stored energy in the water is converted to steam. Not sure if you can reach 110C that way, though.

Addition: for Shane, above - adding salt to water INCREASES the boiling point, it does not decrease it. It is called boiling point elevation and it occurs because some salt is at the surface of the water so the partial pressure of the water molecules above the surface of the water is reduced. Therefore, the water must be heated to a higher temperature before the partial pressure reaches 1 atmosphere (i.e., boiling)

2007-09-14 13:17:31 · answer #2 · answered by CheeseHead 2 · 0 0

yes boiling point depends on the pressure. the greater the pressure, the higher the boiling point or just add salt. the less pressure the lower the boiling point. 100 degrees celsius is the boiling point at 1atmospheric pressure

2007-09-14 13:10:58 · answer #3 · answered by Anonymous · 0 0

If you put the water under pressure it'll reach much higher temperatures before boiling, like in a pressure cooker.

It boils at lower temps at high altitude because of the lower pressure.

2007-09-14 13:04:36 · answer #4 · answered by Al 4 · 2 0

Baby Face knows nothing of Physics! If you increase the pressure on water, it will boil at a higher temperatue. Ever heard of a guy called Kelvin. Similarly, if you go to the top of Mount Everest, where the air pessure is lower, water will boil at a lower
temperature. Long time since I did any Physics. Perhaps it's Boyle's Law, not Kelvin. Google those two names.

2007-09-14 13:23:52 · answer #5 · answered by mustardcharlie 3 · 0 0

Yes pressure is important, but also the purity affects the boiling process. Salty water (brine) boils at a lower temperature 96C. This is because the water molecules produce bonds with the salt molecules and the energy required for the covalent bonds reduces.
Remember that the water we drink and use on a daily basis has a lot of mineral and salts mixed in it. And 100% pure water requires about 106C to boil.

2007-09-14 13:14:03 · answer #6 · answered by Shane C 3 · 0 1

It depends on the pressure, when the pressure exceeds 1 atmosphere the temperature water boils at will increase, when the pressure is less than 1 atmosphere water boils at a lower temperature.

2007-09-14 13:04:19 · answer #7 · answered by milton b 7 · 1 0

Put the water in a pressure cooker or some other sealed container that can withstand the pressure and you can raise the temperature far above waters normal boiling point at atmospheric pressure.

2007-09-14 13:12:08 · answer #8 · answered by jesbud51 2 · 1 0

The answer is of course… pressure. Water boils at 100 at STP Up Everest you have problems making tea because it boils at a much lower temp. The converse also applies.

2007-09-14 13:05:06 · answer #9 · answered by Anonymous · 2 0

Water at normal atmospheric pressure (1 bar) boils at 100 C. At a pressure of 1.43 bar it boils at 110 C.

For it to boil at 40 C the pressure would have to be 0.74 bar.

2007-09-15 00:18:48 · answer #10 · answered by Pete WG 4 · 0 0

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