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13 Απρ 2022 · The graph shows the exponential relationship between the vapor pressure and temperature of water. As the temperature increases, the vapor pressure increases exponentially, as predicted by the Clausius-Clapeyron equation.
14 Αυγ 2020 · To understand that the equilibrium vapor pressure of a liquid depends on the temperature and the intermolecular forces present. To understand that the relationship between pressure, enthalpy of vaporization, and temperature is given by the Clausius-Clapeyron equation.
30 Ιαν 2023 · Vapor pressures have an exponential relationship with temperature and always increase as temperature increases (Figure 2: Vapor Pressure Curves). It is important to note that when a liquid is boiling, its vapor pressure is equal to the external pressure.
The vapor pressure of a liquid varies with its temperature, as the following graph shows for water. The line on the graph shows the boiling temperature for water. As the temperature of a liquid or solid increases its vapor pressure also increases. Conversely, vapor pressure decreases as the temperature decreases.
The graph of the vapor pressure of water versus temperature in Figure \(\PageIndex{3}\) indicates that the vapor pressure of water is 68 kPa at about 90 °C. Thus, at about 90 °C, the vapor pressure of water will equal the atmospheric pressure in Leadville, and water will boil.
At the normal boiling point of a liquid, the vapor pressure is equal to the standard atmospheric pressure defined as 1 atmosphere, [1] 760 Torr, 101.325 kPa, or 14.69595 psi. For example, at any given temperature, methyl chloride has the highest vapor pressure of any of the liquids in the chart.
First recognize that vapor pressure is an equilibrium phenomenon that is temperature dependent. Å note that at equilibrium, as vapor encounters the surface it condenses and the energy released promotes a different particle into the vapor. Å also note that at the higher T more particles achieve separation energy to enter vapor.
