Vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. Vapor pressure is also known as equilibrium vapor pressure.
Evaporation is simply what happens when there is a lower vapor pressure in the atmosphere than is in the liquid.Think of a canning jar. Some air, at the top which is actually under vacuum so you would expect a low vapor pressure. But, the liquid in the jar will only evaporate until the vapor pressure at the top of the jar equalizes with the liquid in the jar.If there is a gradient, water (or other solvents) will move in the direction of the gradient for either evaporation or condensation.
A difference in pressure
It is a difference in pressure
Vapor pressure it the pressure exerted by the vapor molecules. Water has a low vapor pressure because of the high amount of energy needed to break the hydrogen bonds.
Vapor pressure at BP only will be equal to Atmospheric pressure
Vapor pressure is the pressure of vapor in equilibrium with the corresponding liquid phase, that is the pressure needed so that the mass per unit time of liquid that goes into vapor balances that of vapor that goes into liquid. When the external pressure is equal to the vapor pressure then the boiling point is reached (this is because vapor bubbles can resist the external pressure and escape the liquid surface),
Vapor pressure is the pressure produced when vapor particels above a liquid in a sealed container, collide with the container walls.
At higher temperature the vapor pressure is higher.
Why don't winds simply flow down a pressure gradient?
blood pressure gradient
. pressure gradient
- A steep pressure gradient indicates that the isobars are close together, and winds of a hurricane are becoming strong and violent. the pressure gradient is the rate of decrease in pressure in a space in a fixed time. So the steep pressure gradient generates spiraling inward winds of a hurricane, increasing velocity and formation of a hurricane.
Usually a fluid gradient refers to the pressure gradient in any kind of fluid. It is a quantity that shows which direction and how fast the pressure changes around a location.
high pressure vapor
Vapor pressure is the pressure exerted by a liquid's vapor. As the temperature rises, the kinetic energy of molecules are moving more and more rapidly. Thus, the pressure of the vapor phase increases.
The vapor pressure of 1 m sucrose (C12H22O11) is higher than the vapor pressure of 1 m NaCl where the solvent is water Sea water has a lower vapor pressure than distilled water. The vapor pressure of 0.5 m NaNO3 is the same as the vapor pressure of 0.5 m KBr, assuming that the solvent in each case is water The vapor pressure of 0.10 m KCl is the same as the vapor pressure of 0.05 m AlCl3 assuming the solvent in each case is water The vapor pressure of 1 m NaCl is lower than the vapor pressure of 0.5 m KNO3, assuming that the solvent in each case is water The vapor pressure of 0.10 m NaCl is lower than the vapor pressure of 0.05 m MgCl2 assuming the solvent in each case is water.
no gas flow is equal to pressure gradient over resistance
In non-technical terms, vapor pressure is the amount of water vapor in the air and saturation vapor pressure is the amount of water vapor the air can hold at a specific temeprature.
True Vapor Pressure is the pressure of the vapor in equilibrium with the liquid at 100 F (it is equal to the bubble point pressure at 100 F)
Pressure gradient is the rate of pressure change as you change position, not just the difference between the lowest pressure and the highest pressure, but how great (or small) the physical distance between them. Since it the pressure difference that make air flow (wind) the greater the pressure gradient, the greater the wind.
Pressure is no vector. Pressure is a scalar. Pressure-gradient is a vector.why pressure is a scalar