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Author Topic: Is 100° the maximum temperature Water can boil at?  (Read 16815 times)

Offline Razor

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Well, is it??[?][?][?]

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Offline neilep

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Re: Is 100° the maximum temperature Water can boil at?
« Reply #1 on: 19/08/2005 21:56:25 »
no it isn't !!..at different pressures water boils at different temperatures....i think the lower the pressure ie: at the top of a mountain the lower the boiling temperature....ok ?...good !

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Offline daveshorts

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Re: Is 100° the maximum temperature Water can boil at?
« Reply #2 on: 19/08/2005 22:03:35 »
Simply no

If it is pure and at 1 atmosphere and there are large numbers of nucleation points then yes it will boil at 100 degrees Celcius.

You can increase this temperature by increasing the pressure - hence why you use a pressure cooker - thei increased temperature increases the speed of the chemical reactions involved with cooking.

Dissolving things in the water will increase the boiling point - this is why as water boils off as you make toffee the temperature increases up to 120C or so, and why adding salt to the water will make food cook quicker.

Also if the water is  in a clean container with no places for bubbles can form you can super heat the water to above 100C because even above 100C a bubble has to fight against surface tension to form so is only stable when quite big, so you can have water that will boil if you shake it too violently or add some sugar or something to start off the bubbles - this is why you should be careful heating drinks in the microwave as you can superheat the water then get a facefull of boiling water as you stir them...
 

Offline Razor

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Re: Is 100° the maximum temperature Water can boil at?
« Reply #3 on: 19/08/2005 22:33:33 »
Thanks DaveShorts thanks neilep

-----------------------
"We apologize for the error in last week's paper
In which we stated that Mr. Arnold Dogbody was a defective in the police force. We meant, of course, that Mr. Dogbody is a detective in the police farce."
-Correction notice in the Ely Standard, a British newspaper

For those who haven’t seen this yet, it's a must view!!!!
CHECK IT OUT!!!!

http://www.ebaumsworld.com/presaddress2.shtml

Also:
http://www.svspower.com/
For Dodge Viper Fans.
 

Offline Ultima

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Re: Is 100° the maximum temperature Water can boil at?
« Reply #4 on: 20/08/2005 16:22:50 »

 

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