Also how would the boiling point be affected in a presurized boiler system?
2007-01-23 09:00:16 · 9 answers · asked by Sarah P 1 in Science & Mathematics ➔ Earth Sciences & Geology
Higher altitude = lower boiling point (and longer cooking time)
A pressure cooker raises the boiling point of the water in it, which would mimic higher air pressure. Using a pressure cooker at higher altitude eliminates the need for longer cooking times.
2007-01-23 09:08:40 · answer #1 · answered by JackJester 5 · 1⤊ 0⤋
You have to reason through it.
Water has molecules. that are farther apart when they gaseous.
In liquids, the molecules are closer.
Lets start with the pressurized situation. If pressure bares down on the water its molecules move closer, which make it more like liquid water, which keeps it from wanting to boil. So you would need more heat, a higher boiling point.
We could reason through the mountaintop too, but its low pressure, so you know it will be the exact opposite. Lower boiling point.
Do you want proof? On cook-at-home pizza boxes, it says to use less heat at higher altitudes. Of course, that isn't water, but the principles are probably similar.
2007-01-23 09:26:43 · answer #2 · answered by the blue hat 2 · 0⤊ 0⤋
As the altitude increases, such as a mountain peak, the air pressure decreases, allowing the water to boil at less than normal (sea level).
A pressure cooker increases the pressure, forcing the boiling point higher. Same as what happens in your car radiator. (And why you should NEVER remove the radiator cap when its still hot. The lack of pressure will make the superheated coolant boil instantly spraying you with scalding liquid.)
2007-01-23 09:05:22 · answer #3 · answered by KirksWorld 5 · 1⤊ 0⤋
Lower air pressure means lower boiling point. Higher air pressure means higher boiling point.
2007-01-23 09:03:18 · answer #4 · answered by Christina 6 · 2⤊ 0⤋
pv = nrt
So, at lower pressure, the boiling point is lower. At higher pressure, the boiling point is higher.
2007-01-23 09:03:03 · answer #5 · answered by tony1athome 5 · 1⤊ 1⤋
it gets lower
if you can set it on low then the water will boil much easier
2007-01-23 10:14:36 · answer #6 · answered by Anonymous · 0⤊ 0⤋
lower temp to boil.
more pressure, higher boiling temp.
2007-01-23 09:02:52 · answer #7 · answered by my alias 4 · 1⤊ 1⤋
lower on peak- less atmospheric pressure
higher in pressure cooker- autoclave...
Do your own homework!
2007-01-23 09:03:58 · answer #8 · answered by churnin 4 · 0⤊ 0⤋
lower
2007-01-23 09:07:20 · answer #9 · answered by wheeliemasta 3 · 0⤊ 0⤋