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If you reduce the air pressure you make it 'easier' for water particles to become gaseous as there are fewer gas particles colliding with them on the surface, reducing their energy. Without this interference they gain enough energy to become a gas at a lower temperature.

The converse is also true. If you boil a liquid under pressure there are so many gaseous particles colliding with the surface of the liquid, reducing the liquid particles chance of 'escape'. This means a pressurised liquid boils at a higher temperature. It's this feature that is used in pressure cookers to cook things quickly, because they reach a higher temperature.

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14y ago
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11y ago

As air pressure decreases, the boiling point of water also decreases.

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Q: What happens to the boiling point of water when you decrease the air pressure?
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Related questions

What happends to the boiling point of a substance when pressure above it decreases?

The boiling point will also decrease in this case.


Do the boiling point of water directly proportional to pressure?

Yes, if you decrease the pressure, boiling point will also decrease and vica versa.


When a liquid sample is taken from sea level to a higher elevation what happens to the external pressure on the liquid and the boiling point of the liquid?

atmospheric pressure is lower and the boiling point is less


Why the boiling point of water is 98 in Kaghan?

The boiling point of water decrease when the altitude increase and the atmospheric pressure decrease.


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.


What happens to the boiling point of a liquid if the pressure exerted on a surface is reduced?

The boiling point lowersas the pressure is lowered.


How does pressure affect boiling point?

The boiling point is that temperature when the SATURATEDvapor pressure of a liquidbecomes equal tothe surrounding pressure.Thus the higher the sorrounding pressure, the higher the boiling point.


A decrease in vapor pressure will cause?

It will result in a decrease in the boiling point of a liquid, among other things.


As you go to higher elevations above sea level the boiling point of water?

as you go higher above sea level, pressure decreases. Due to the decrease in pressure, the temperature needed for water to boil is less than it is than it would be at sea level. Thus, it would take less heat energy for the bonds to break and become a gas than it would in an environment with more pressure.


What happens at a substance's boiling point?

Its vapor pressure equals atmospheric pressure.


What happens to water if you lower its pressure?

you lower its boiling point.


What is the boiling point of H30 plus?

It does not exist except as part of water - it does not exist in isolation so can have no boiling point as boiling happens when vapour pressure equals the external pressure.