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The latent heat of vaporization at low pressure and temperature will be lower than at standard conditions because the energy required to overcome intermolecular forces and change the state of the substance is reduced. This reduction occurs due to the lower kinetic energy of the particles involved, resulting in less energy needed to transition from liquid to gas phase.
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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.
Latent heat of vaporisation decreases as pressure increases and becomes zoro at critical pressure i read . why it so?
At critical pressure, the distinction between liquid and gas phases disappears as the substance exists as a supercritical fluid. In this state, the latent heat of vaporization becomes zero because there is no longer a clear boundary between the liquid and gas phases for the substance to transition between. The behavior of the substance at critical pressure is unique and results in the disappearance of the latent heat of vaporization.
Is latent heat of vaporisation fixed?
No, the latent heat of vaporization is not fixed and can vary depending on the substance. It represents the amount of energy required to change a unit mass of a substance from liquid to gas at a constant temperature and pressure.
What is the value of latent heat of vaporization of water?
The latent heat of vaporization of water is approximately 2260 kJ/kg at standard atmospheric pressure and temperature. This is the amount of energy required to change 1 kg of liquid water at its boiling point into steam at the same temperature.
What is a latent heat energy levels?
Latent heat- the amount of heat required by a system/ substance to change phase. It's also heat absorbed or radiated during a change of phase at a constant temperature and pressure.
What is the difference between latent heat of fusion and latent heat of vapourization?
the heat which is absorbed by a substance for changing solid into liquid state by keeping temperature constant is called latent heat of fusion while the heat which is evolved during phase change of liquid to vapour state at constant temperature is called latent heat of vapourization
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 is the latent heat of vapourization of steam is more than that of boiling water?
Because steam is hotter than boiling water.
What will happen to the temperature of a pot of boiling water as the water evaporates?
As water evaporates from the boiling pot,its temperature drops.This results from the fact that water molecules during evaporation extract its latent heat of vapourization from the pot, thereby exerting a cooling effect on it and its content.Regulation of body temperature by sweating is based on this principle. When sweat comes out of its pores, usually in suny days, it evaporates and in the process extract its latent heat of vapourization from the body.This causes the body temperature to decrease.In this way it keeps the body temperature fairly constant.
Latent heat of vaporisation decreases as pressure increases and becomes zoro at critical pressure i read . why it so?
At critical pressure, the distinction between liquid and gas phases disappears as the substance exists as a supercritical fluid. In this state, the latent heat of vaporization becomes zero because there is no longer a clear boundary between the liquid and gas phases for the substance to transition between. The behavior of the substance at critical pressure is unique and results in the disappearance of the latent heat of vaporization.
Is latent heat of vaporisation fixed?
No, the latent heat of vaporization is not fixed and can vary depending on the substance. It represents the amount of energy required to change a unit mass of a substance from liquid to gas at a constant temperature and pressure.
What is laten heat?
"Latent heat" refers to the heat energy absorbed or released during a change of state without a change in temperature. For example, when ice melts into water, heat is absorbed from the surroundings without a rise in temperature, which is the latent heat of fusion. Similarly, when water vapor condenses into liquid water, heat is released without a decrease in temperature, known as the latent heat of condensation.
How are sensible heat and latent heat different in terms of their impact on temperature changes in a substance?
Sensible heat and latent heat are different in how they affect temperature changes in a substance. Sensible heat directly raises or lowers the temperature of a substance when added or removed, while latent heat causes a substance to change its state (such as melting or evaporating) without changing its temperature.
What is the opposite of latent heat?
The opposite of latent heat is sensible heat. Sensible heat is the heat that causes a change in temperature of a substance without a change in phase.
Latent heat energy levels?
Latent heat is the energy absorbed or released during a phase change without a change in temperature. It is classified into two types: latent heat of fusion, which is the energy involved in changing a substance from solid to liquid or vice versa, and latent heat of vaporization, which is the energy associated with changing a substance from liquid to gas or vice versa. These energy levels vary depending on the substance and the phase change involved.
How does pressure affect sensible and latent heat?
Increasing pressure typically increases the boiling point of a substance, which affects the amount of latent heat required to change the state of the substance from liquid to gas. Sensible heat, on the other hand, is not significantly affected by pressure changes, as it primarily involves changing the temperature of a substance without a phase change.
What is the difference between latent heat and heat?
Usually as we give heat to a system then temperature of the system would rise. But at the boiling point though we give enormous amount of heat the temperature would remain the same and so the heat given is said to be latent and it is used to change water from liquid state to gaseous state. Hence the name latent heat
