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Apr 24, 2021 · Vapor pressure (or vapour pressure) is the equilibrium pressure of a vapor above its liquid or solid state in a closed container. In this type of closed system, some molecules of a liquid or solid have enough kinetic energy to escape at the surface and enter the vapor (gas) phase.
Raoult’s law states that “the vapor pressure of an ideal solution of a non-volatile solute is equal to the vapor pressure of the pure solvent at that temperature multiplied by its mole fraction.”. This law is named after French chemist François-Marie Raoult, who discovered it in 1887.
Jan 30, 2023 · Vapor pressure or equilibrium vapor pressure is the pressure of a vapor in thermodynamic equilibrium with its condensed phases in a closed container. All liquids and solids have a tendency to evaporate or sublime into a gaseous form and all gases have a tendency to condense back to their liquid or solid form.
Vapour pressure, also known as vapour equilibrium pressure, can be defined as the pressure exerted (in a system featuring thermodynamic equilibrium) by a vapour with its condensed phases (solid or liquid) in a closed system at a given temperature.
- 2 min
- A liquid’s vapour pressure is a vapour’s equilibrium pressure above its liquid (or solid); that is, the vapour pressure resulting from a liquid (or...
- Raoult’s law is a chemical law that relates the solution’s vapour pressure to the mole fraction of a solution added. The law of Raoult is expressed...
- When a liquid’s vapour pressure is the same as the atmospheric pressure, the material is at temperature and pressure at the boiling/freezing point....
- As a result, there are lower boiling points of liquids with high vapour pressure. By heating a liquid and allowing more molecules to enter the atmo...
- The material with the lowest boiling point would, therefore, have the highest vapour pressure at room temperature (the easiest way to reach the gas...
Vapor pressure can be measured in various ways. Use this quiz and worksheet to check your understanding of the characteristics of vapor pressure and the calculation of vapor pressure.
Nov 21, 2023 · The vapor pressure is the pressure exerted by vapor at equilibrium with its solid or liquid in a closed chamber. It can be calculated either by using...
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Apr 12, 2023 · The vapor pressure of liquid SO 2 is 33.4 torr at −63.4°C and 100.0 torr at −47.7 K. What is the ΔH vap of SO 2? What is its vapor pressure at −24.5 K? At what temperature is the vapor pressure equal to 220 torr?
