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Why does water not boil at 100C when it is under high pressure?
Wiki User
∙ 12y ago
the density has increased slightly..... you have changed the properties of the standing water and therefore changed it's boiling point... same principle as why running water don't freeze at 0 degrees but standing water does.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoWater has a higher specific heat capacity about 4.186 kJ/kg than other materials. This means that it takes 41860 Joules of heat to raise 1kg of water by 1 degree.
Gold for example, has a heat capacity of about 0.129kJ/kg. This means that it takes less energy to raise its temperature than water.
Wiki User
∙ 13y agoIt becomes more difficult to form bubbles of vapour throughout the liquid when the atmospheric pressure or the pressure of the container is higher. Boiling means that the molecules are breaking apart and forming vapour pockets not just on the surface. More energy is required if there is more pressure, therefore, a higher temperature is needed.
Wiki User
∙ 13y agoA liquid boils at a temperature at which its vapor pressure becomes equal to the pressure above its surface. Since you have increased the pressure to higher than normal atmospheric pressure, the water will not boil at 100oC, this is because the vapor pressure of the water at 100oC is now lower than the atmospheric pressure above the water's surface. In order for the water to boil its vapor pressure must be increased to at least the higher atmopsheric pressure. To do that you need to increase the temperature of the water since vapor pressure increases as the temperature of the water increases. This is why water will boil higher than 100oC at a higher than normal atmospheric pressure.
Wiki User
∙ 12y agoAt a higher pressure, the gas (vapor) will have more density, therefore more atoms will go back from the vapor phase to the liquid phase, and it requires a higher temperature to reach equilibrium.
Wiki User
∙ 13y agoYes. And lower temperature at lower pressure. Cooking times in water are longer
in cities at high altitudes, where air pressure is less, because boiling water is not
quite as hot as it is at lower altitudes.
Wiki User
∙ 15y agobecause these not much air in uder pressure areas, you see now get to it
Wiki User
∙ 11y agobecause it takes a higher temperature for the vapor pressure to equal the higher external pressure.
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How hot must water get to boil in Fahrenheit and Celsius?
At sea level, water boils at 212F and 100C212f 100c
What C does water boil under normal atmospheric pressure?
100 Celsius
Why does the water in a car radiator sometimes boil explosevly when the radiator cap is removed?
Water under pressure has a higher boiling point, if the water is already hot enough to boil it will suddenly erupt when the cap is removed and pressure relieved.
Can you boil the water at room temperature?
yes,at room temperature by decreasing the pressure we can boil the water.
Can you make water boil at 70 degree Centigrade?
70' Fahrenheit is moderately warm water a about 28' F below body temperature. 70'Centigrade is hot hot, only 30' C below boiling 70'Kelvin is super cold only 70' K above absolute zero.
When will water boil at temperatures less than 100C?
When the gas phase pressure is less than 1 atmosphere.
What temperateure does water boil?
212F or 100C
Will water boil at 100C at the top of a mountain?
no because at the top of the mountain its less pressure than at the sea level so it will take more time to boil
What boils at what degree Celsius?
This question is too vague to answer: many different substances boil at many different degrees Celsius. In fact the same substance can be made to boil at different temperatures by changing the pressure acting on it.
Mount everest has a high pressure to boil water?
The boiling point of water changes with altitude. While it boils at 100C at sea level, at the summit of Mount Everest water would boil at a lower temperature of 72C.
How can you get water to boil at 170 degrees c?
Water at ambient atmospheric pressure boils at 100C. One way of raising the boiling point is to raise the surrounding pressure. If you raise the pressure surrounding the water to about 93 psi above atmospheric, it will boil at about 170C. Do not try this at home! Boiling water at this pressure is extremely dangerous and can severely burn you.
Why wont the water boil after it has reached its boiling point?
If water is under pressure at all, which could be based on what the atmospheric pressure is, it will not boil at its prescribed temperature.
What is the state of water at 257c?
There isn´t water at 257c because the water was starting to boil and to evaporate at 100c.
What temperature in degress celsius does water freeze and boil?
it freezes at 0C and boils at 100C
How hot must water get to boil in Fahrenheit and Celsius?
At sea level, water boils at 212F and 100C212f 100c
What C does water boil under normal atmospheric pressure?
100 Celsius
Will water boil at same temperature on Mount Averest?
No.Because,on mount everest, atmospheric pressure is very low than on seashore. So, the vapor pressure required for boiling is low and vapor pressure is directly proportional with temperature.Hence, water will boil at the temperature less than 100C.
