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What is the difference between the latent heat of water and the latent heat of evaporation of water?
Wiki User
∙ 14y ago
Latent heat means the inherent, hidden heat.
When we place a vessel of water on a burning stove having a thermometer within, initially the temperature level would rise in the thermometer because heat is taken up by water from the stove. But when the temperature becomes nearly 100oC the temperature would remain at the same level. Do you say that heat is not taken by the water from the flame of the stove?
Certainly not. Then why is it so? Here, a new phenomenon starts taking place. Every unit (say 1 kg) of water starts getting converted from liquid form into gas form, that is, steam. So heat is totally utilized for that change of state. Hence the level of the thermometer stands still. This amount of heat sole utilized to have this change of state is called latent heat of steam. This means all heat drawn from the stove is available as inherent heat within steam. When steam condenses back into water, the hidden heat would come out.
Same way, you can think about giving heat to ice. If suppose the initial temperature of the ice is some -10oC, then temperature would rise up to 0oC and there after though heat is continuously passed on to the ice solid, the temperature will come to stand still. Now, the heat is used to melt every unit of ice into its liquid form (water). This heat is termed as latent heat of melting. Or even we say this as latent heat of fusion.
The above two are the examples of the change of state. From liquid to gas and from solid to liquid.
Apart from these, water would be changed into water vapour even at the room temperature. This phenomenon is due to the shooting off the water molecules right from the water medium into the atmosphere (air medium). But, you cannot see any fall in temperature due to this escape. Here molecules gain energy from the surroundings and hence molecules could come out so without making any change in its temperature. This is termed as latent heat of vapourisation. (this would be better instead evaporation)
Wiki User
∙ 14y ago
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What is heat called that is stored in the atmosphere as a result of evaporation?
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).
Which property of water accounts for the cooling effect of perspiration?
The latent heat of evaporation.
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.
Are variables in evaporation?
For evaporation from a pure water surface, the rate of evaporation is proportional to the difference in vapor pressure between that of the water surface and that of the bulk air over it. The vapor pressure of water in turn depends on its temperature.
What is the difference between crystallization and evaporation?
Crystallization -may be defined as a process which separates a pure solid in the from of its crystals from a solution. Evaporation - Process of separating any substance from its solution by removing water is called evaporation.
What is latent heat evaporation?
Latent heat of evaporation of water to steam is 2270 KJ/Kg
What is heat called that is stored in the atmosphere as a result of evaporation?
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).
The difference between precipitation and evaporation?
i think the answer is that evaporation is wen the water of liquid dries up
What does the body depend upon when cooling itself in a hot environment?
The latent heat of evaporation of water - the evaporation of sweat.
Which property of water accounts for the cooling effect of perspiration?
The latent heat of evaporation.
The form of energy related to the change of the state of water?
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.
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 are condensation and evaporation opposite?
Why are Condensation and Evaporation opposite?Condensation is the process of changing water vapor to liquid or water due to the "Releasing of Heat", while Evaporation is the changing of water to water vapor due to the "Absorption of Heat"Or, in short:Condensation = releasing of heatEvaporation = absorption of heatSo that is why they are different or opposite
What is the difference between the processes evaporation and boiling in pure water?
Evaporation is completely natural. Boiling isn't. Hopefully this helps.
What is the main difference between condensation and evaporation?
evaporation is the process of water going from a liquid to a gas. condensation is the formation of clouds
Define latent heat of fusion and latent heat of vapourisation?
Latent heat of vapourisation can be define as the rate by which water is heat to vapourise, it has a difference with evaporation because evaporation occurs directly when the water start heatin while vapourisation always start in a specific temperature
Are variables in evaporation?
For evaporation from a pure water surface, the rate of evaporation is proportional to the difference in vapor pressure between that of the water surface and that of the bulk air over it. The vapor pressure of water in turn depends on its temperature.
