What does the vapor pressure of a liquid depend on?
Characteristics of Vapor Pressure Vapor pressures are dependent only on temperature and nothing else. The vapor pressure of a liquid does not depend on the amount on the liquid in the container, be it one liter or thirty liters; at the same temperature, both samples will have the same vapor pressure.
Does vapor pressure of liquid depend on surface area?
Vapor pressure does not depend on surface area because it is derived from the thermodynamic equilibrium between the liquid and gas phases of a substance. The closer the vapor pressure is to atmospheric pressure, the closer that substance is to boiling.
Does vapor pressure depend on size of container?
Humaam H. Volume does not affect vapor pressure ! The liquid in a container is in equilibrium with the vapor. Furthermore, if the volume is increased, some of the liquid will change into it’s vapor state.
On which factor does vapour pressure of liquid at fixed temperature depends upon?
The vapor pressure for any liquid then depends only on the temperature and the IMF. As temperature increases, VP increases. Stronger IMF mean that it requires more energy to overcome the IMF and enter the gas phase. Thus, the rate of evaporation will be lower and the VP will be lower.
Why does vapour pressure does not depend on surface area?
Vapour pressure does not depend upon the surface area bacause vapours produced from the surface increases on increasing the surface area. Therefore the ratio of numbers of vapours produced to surface area remain the same and vapour pressure being independent is not affected.
How does vapor pressure depend on surface area?
Does vapor pressure increase with intermolecular forces?
A liquid’s vapor pressure is directly related to the intermolecular forces present between its molecules. The stronger these forces, the lower the rate of evaporation and the lower the vapor pressure.
Which liquid has the lowest vapour pressure?
Mercury
Mercury exerts the lower vapour pressure because of the strong bond among its atom.
What is the effect of temperature on vapour pressure of a liquid?
As the temperature of a liquid increases, the kinetic energy of its molecules also increases and as the kinetic energy of the molecules increases, the number of molecules transitioning into a vapor also increases, thereby increasing the vapor pressure.
What is vapour pressure of liquid Class 12?
Vapour Pressure of a Liquid Vapour pressure is the pressure exerted by vapours when they are in equilibrium with the liquid phase at a given temperature. It depends on the nature of the liquid and temperature. Vapour pressure of pure liquid is always greater than the vapour pressure of its solution.
What causes vapor pressure?
Vapor Pressure and Temperature Vapor pressure is dependent upon temperature. When the liquid in a closed container is heated, more molecules escape the liquid phase and evaporate. The greater number of vapor molecules strike the container walls more frequently, resulting in an increase in pressure.
How does the vapour pressure of a liquid depend?
The vapour pressure of a liquid depends upon the nature of liquid and temperature. Vapour pressure can be defined as the pressure exerted by a vapour with its condensed phases in a closed system at a given temperature. The process of evaporation depends on different factors, Liquids have weak intermolecular forces.
Which is an example of a vapor pressure?
The Macroscopic View The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container. Examples: substance
Which is the sole factor that affects vapour pressure?
Temperature is the sole factor that affects vapour pressure. The vapour pressure of a liquid is independent of the volume of liquid in the container, whether one litre or thirty litres; both samples will have the same vapour pressure at the same temperature.
What is the equilibrium pressure of a liquid?
The Macroscopic View. The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container.