How does pressure affect vaporization?

When the vapor pressure equals the external pressure, bubbles of vapor form within the liquid, and it boils. The temperature at which a substance boils at a pressure of 1 atm is its normal boiling point.

What is vapour pressure in chemistry?

Vapour pressure is a measure of the tendency of a material to change into the gaseous or vapour state, and it increases with temperature. The temperature at which the vapour pressure at the surface of a liquid becomes equal to the pressure exerted by the surroundings is called the boiling point of the liquid.

Does heat of vaporization change with pressure?

As the pressure is increased, the increased pressure helps in binding the molecules. Therefore less amount of heat needs to be removed. So, as pressure increases, latent heat of vapourisation decreases while latent heat of condensation decreases.

What is condensation point in chemistry?

Condensation point is the temperature at which a vapor condenses into a liquid without a change in the temperature of the substance. At 1.0 atm pressure the boiling point of pure water is 100.0 oC.

What is the difference between vapor pressure and evaporation?

Note that the rate of evaporation of the solid is equal to the rate of condensation of the gas. The pressure exerted by the gas in equilibrium with a solid or liquid in a closed container at a given temperature is called the vapor pressure.

What is vapour pressure and how is it affected by 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.

What is vapor pressure simple definition?

The vapor pressure is the force exerted on the walls of a closed container by the vaporized portion of a liquid.

What is vapour pressure with example?

One of the best examples of vapour pressure in real life is the relative humidity experienced by a person in a particular area. The relative humidity can be defined as the ratio of the actual vapour pressure of water in the air to the saturated vapour pressure of water in the air.

How do you find heat of vaporization with temperature and pressure?

If the problem provides the two pressure and two temperature values, use the equation ln(P1/P2)=(Hvap/R)(T1-T2/T1xT2), where P1 and P2 are the pressure values; Hvap is the molar heat of vaporization; R is the gas constant; and T1 and T2 are the temperature values.

What is condensation and condensation point?

Condensation point is a temperature at which gas changes to liquid. Generally, boiling point is same as condensation point. For water boiling point is 100∘C, -212∘F. So, condensation point is also 212∘F.

What is the difference between melting point and condensation point?

Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas.

What is the meaning of vaporization?

1 : to convert (as by the application of heat or by spraying) into vapor. 2 : to cause to become dissipated. 3 : to destroy by or as if by converting into vapor a tank vaporized by a shell.