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Why does boiling point decrease in pressure cooker by increasing pressure?
Wiki User
∙ 12y ago
It doesn't. When the pressure inside the sealed pot increases, the boiling point of
the fluids inside it also increases. That's exactly what you want, and the reason
you use the pressure vessel.
For example, if you're cooking something in water, and it's open to normal
atmospheric pressure, then it can never get any hotter than 100° C (212° F) ...
at that temperature, the water turns to vapor and wafts away. So the food
you're cooking can't get any hotter than that either.
But if you seal the water and let the pressure increase, then it can get hotter
without vaporizing. Then the slab of meat in the water can also get hotter, and
it can cook sooner.
Wiki User
∙ 12y ago
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Does a pressure cooker raise the boiling point?
Yes, it is true.
What is the effect of decreased pressure on the boiling and freezing point?
As pressure decreases, the boiling point of water will also decrease. Backpackers camping in the high mountains are familiar with the phenomena when they get water boiling - and find that it is still only lukewarm because the atmospheric pressure at their high altitude is so low.
Why the boiling point of water in pressure cooker high?
A pressure cooker minimizes the escape of fluids or air. The build-up of air and fluid increases the pressure inside the cooker, which also increases the boiling point. An open kettle allows the fluid and air to escape, heat is lost thus cooking time is longer.
How you measure boiling point in pressure cooker?
Normally you have a pressure of approx. 2 bar (2kPa) in a pressure cooker.At this pressure the boiling point of water is 120 0C (393 K) or 247 FSee the Related Questions to the left for more information about how pressure affects the boiling point of water.
What affect does ambient pressure have on the boiling point temperature of a liquid?
No, the external environment does not affect the boiling point of a liquid inside a pressure cooker. Since the liquid is sealed away from the air, it is not affected by ambient air pressure or humidity.
Why food is cooked in pressure cooker?
An increase in pressure allows an increase in the boiling temperature of the liquid in the cooker. At 15 psi (the highest rated home kitchen pressure cooker) the boiling temperature of water is 250 degrees F.
Why is food cooked quickly in pressure cooker?
An increase in pressure allows an increase in the boiling temperature of the liquid in the cooker. At 15 psi (the highest rated home kitchen pressure cooker) the boiling temperature of water is 250 degrees F.
Can water be made to boil at 95 or 105C?
Yes. The temperature can be reduced by lowering the "atmospheric" pressure: for example by going up a mountain. The boiling point can be raised by increasing the pressure - in a pressure cooker, for example, or by dissolving a solute such as salt.
Does a pressure cooker raise the boiling point?
Yes, it is true.
What is the effect of decreased pressure on the boiling and freezing point?
As pressure decreases, the boiling point of water will also decrease. Backpackers camping in the high mountains are familiar with the phenomena when they get water boiling - and find that it is still only lukewarm because the atmospheric pressure at their high altitude is so low.
How does a pressure cooker demonstrate the effect of air pressure on waters boiling point?
Vapour rom the boiling water is not allowed to escape and so the pressure above the water increases. This raises the temperature at which the water inside the cooker boils.
Why the boiling point of water in pressure cooker high?
A pressure cooker minimizes the escape of fluids or air. The build-up of air and fluid increases the pressure inside the cooker, which also increases the boiling point. An open kettle allows the fluid and air to escape, heat is lost thus cooking time is longer.
Food in a pressure cooker is cooked faster because of the?
The higher pressure raises the boiling point of water.
How you measure boiling point in pressure cooker?
Normally you have a pressure of approx. 2 bar (2kPa) in a pressure cooker.At this pressure the boiling point of water is 120 0C (393 K) or 247 FSee the Related Questions to the left for more information about how pressure affects the boiling point of water.
Is there a relationship between boiling and pressure?
Yes, there is. Higher pressure increases the boiling point and lower pressure decreases it. That is why a pressure cooker works and why water boils at lower temperatures in high altitudes.
What would be the boiling point of in a pressure cooker of water at 1.3 ATM?
190 degress
How can you change the boiling point of liquid?
you can adjust the pressure. for example water boils at a higher temperature in a pressure cooker.
