critical point of water is that point on the pressure-volume phase diagram of the water,above which there will be no line of the equilibrium between liquid and gas phase.
That means that above this pressure it is not possible to get liquid again by increasing the pressure of the mixture.if we will do so then it will get converted to subcritical fluid i.e.a highly compressed gas. This happens because the interatomic forces at that presure are much more then the forces because of pressure that are trying to change the state of the gas.
the values for water are 218 ATM pressure and 374 centigrade..
i hope datas are correct:)
A temperature of 374 0C at 218 atm.
640 kCal/kg
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.
The latent heat of vaporisation.
latent heat
Latent heat is emitted.
the answer is latent Latent heat is correct, but specifically the latent heat of evaporation of (whatever is evaporated, in this case water) water. When the evaporated water condenses, it releases this latent heat as it precipitates, which is why it tends to feel warmer during rainstorms (unless the water is running down your neck in which case it feels horrible).
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.
latent heat of vapourisation is the heat energy required to change 1 kg of a liquid to gas at atmospheric pressure at its boiling point where latent heat of fusion is the amount of heat energy required to change 1 kg of solid to liquid at its melting point so that is why latent heat of vapourisation higher than latent heat of fusion.
Latent heat of the ice, liquid water has no latent heat reserves. Perhaps at freezing we should call it "latent cold" but thermodynamics has always referred to it as latent heat whether at boiling or freezing. +++ It is latent heat because the water (liquid or ice) at freezing-point (0ºC) still contains heat energy as its temperature is at about 217ºK.
Latent heat is an important form of atmospheric energy. Latent heat is a property of water vapor in the atmosphere and when water vapor condenses it releases latent heat. Latent heat must be supplied to evaporate liquid water and this heat affects the behavior of the weather.
In this first heat boil the water at its boiling point that is 100 degree Celsius, when the temperature is reached then heat supplied to water not boils the water it is used to change the state of the matter means heat is used to overcome the forces of attraction to change its state and the heat is latent heat of vaporisation.so this is latent heat (hidden heat) which not increase the temperature for some time.
The latent heat of vaporisation.
The latent heat of fusion of 1kg water is 334 kJ/kg. (Wikipedia)
Latent heat of evaporation of water to steam is 2270 KJ/Kg
The water takes heat in the form of latent heat at its boiling point to convert into vapour. this puts the fire down.
In the atmosphere latent heat is a property of water vapour. When water vapour condenses it releases latent heat, and latent heat must be supplied to evaporate liquid water. This heat affects the behaviour of the weather. Similar effects occur in the change from liquid water to ice and vice versa.
latent heat
The energy which must be transferred to or from a sample of water in order to change it's state is called the Latent Energy or Latent Heat - for example Latent Heat of Evaporation or Latent Heat of Freezing.