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Why does lowerd air pressure allow water to boil at room temperature?
Wiki User
∙ 6y ago
boiling point is the temperature at which the vapour pressure of a liquid is equal to the atmospheric pressure. so when air pressure is low, it equalises that air pressure easily at lower temperatures itself. so its boiling point lowers.
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoThe molecules of water have some energy, and are thus in motion continually.
By (statistical) chance, some individual molecules will have a greater energy than their fellows, and thus have sufficient energy to break the surface tension of the liquid.
Even solid ice will sublime directly from the solid ice phase to the water vapour phase, without passing through a wet water phase in between.
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What conditions are gases most soluble in water?
The solubilty of gases in water is increased at lower temperatures and higher pressures.
How does changing temperature or pressure affect the solubility of gas in water?
As temperature (of the solvent) decreases and pressure (of the gaseous solute) increases the solubility of gases in water will increase.
What temperature does water evaporate and what temperature does water freeze?
in atmospheric pressure water evaporates at 100 degrees Celsius and freeze at 0 degrees Celsius. This may vary based on pressure
State and explain how the boiling point of water will change if the atmospheric pressure falls?
Water boils when its internal pressure reaches that of the atmospheric pressure. Therefor, if one lowers the atmospheric pressure, the water would boil at a lower temperature (in fact, one can make water boil at room temperature by dramatically lowering the atmospheric pressure).
How does specific latent heat of water vary with temperature?
Latent heat of water is the heat required to change its state at a particular temperature BECAUSE of the pressure at which the water is at at the point of fusion or evaporation.The latent heat is not affected by temperature (in fact there is no temperature change during absorption of latent heat) it is affected by the pressure acting on a substance. As the pressure increases, the latent heat (of evaporation) decreases, consequently with the change in pressure there is also a different temperature at which the evaporation takes effect, higher pressure, higher temperature at the evaporation point.
Why does lowered air pressure allow water to boil at room temperature?
Less force pushes down on the liquid, making it easier for gas to escape
What 3 factors affect the density of sea water?
Temperature, pressure, and common ion effect
What fact or measurement would allow you to predict how high the pressure of water vapor inside the cup will rise?
the temperature of the water. I'm sure this is for the program Study Island.
Pressure of a nickel causes ice to do what?
If the ice is right at or close to the melting point temperature at ambient pressure, the pressure of a nickel will cause ice to melt and allow the nickel to penetrate into the ice, displacing the melted water as it goes.
Why Poes water on top of a mountain boil at a lower temperature than at sea level?
It is the effect of air pressure. The air pressure at the top of a mountain is less than the air pressure at sea level. The effect of air pressure on a water surface is to prevent or oppose water molecules escaping from the surface. The greater the air pressure, the more heat energy is needed to allow the water molecules to escape and so at sea level the water will boil at a higher temperature than if it were on top of a mountain.
What condition will allow water to evaporate?
The continuous movement of water molecules can lead some molecules at the surface to escape in the atmosphere as a gas. High temperature and low pressure favors evaporation.
Can you boil the water at room temperature?
yes,at room temperature by decreasing the pressure we can boil the water.
How does pressure affect the temperature at which water boils?
There is a direct relationship between the temperature at which water boils and the air pressure on it. Higher pressure, higher boiling point. Lower pressure, lower boiling point.
Why do vapor bubbles not form in water at room temperature and standard pressure?
we know that water bubbles are formed when external pressure becomes equal to the internal pressure so room temperature is 20 digree to 25 digree and internal pressure deos not equal to external pressure at this temperature so it is clear that vapor bubbles deos not formed in water at room temperature and standard pressure where standard pressure is 760 torr.
What conditions are gases most soluble in water?
The solubilty of gases in water is increased at lower temperatures and higher pressures.
When can water evaporate?
Water is evaporated at any temperature; a high pressure and a low pressure favors evaporation.
The vapor pressure of a sample of boiling water is 380 torr The temperature of the water is?
The temperature of the water is 100 degrees celsius.
