Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Vapor Pressure Lowering03:28

Vapor Pressure Lowering

The equilibrium vapor pressure of a liquid is the pressure exerted by its gaseous phase when vaporization and condensation are occurring at equal rates: Dissolving a nonvolatile substance in volatile liquid results in a lowering of the liquid’s vapor pressure. This phenomenon can be explained by considering the effect of added solute molecules on the liquid's vaporization and condensation processes. To vaporize, solvent molecules must be present at the surface of the solution. The presence of...
Vapor Pressure02:34

Vapor Pressure

When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
Vapor Pressure of Fluid01:28

Vapor Pressure of Fluid

The vapor pressure of a fluid is a crucial concept in fluid mechanics, influencing phenomena such as boiling and cavitation. Vapor pressure refers to the pressure exerted by a vapor at a state of thermodynamic equilibrium with its corresponding liquid phase at a specific temperature. It represents the tendency of molecules to escape from the fluid surface into the vapor phase.
When a liquid is placed in a closed container with a small air space, and the space is evacuated, vapor molecules will...
Dalton's Law of Partial Pressure01:11

Dalton's Law of Partial Pressure

The partial pressure of a gas is a measure of the thermodynamic activity of the gas's molecules. The pressure that a gas would create if it occupied the total volume available is called the gas's partial pressure. If two or more gases are mixed together in a container, the molecules move randomly and collide with each other, causing them to reach thermal equilibrium. When the gases have the same temperature, their molecules have the same average kinetic energy. Thus, each gas obeys the ideal...
Applications of the Ideal Gas Law: Molar Mass, Density, and Volume03:43

Applications of the Ideal Gas Law: Molar Mass, Density, and Volume

The volume occupied by one mole of a substance is its molar volume. The ideal gas law, PV = nRT, suggests that the volume of a given quantity of gas and the number of moles in a given volume of gas vary with changes in pressure and temperature. At standard temperature and pressure, or STP (273.15 K and 1 atm), one mole of an ideal gas (regardless of its identity) has a volume of about 22.4 L — this is referred to as the standard molar volume.
Van der Waals Equation01:10

Van der Waals Equation

The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Accu16S/AccuITS: Accurate and broadly applicable amplicon sequencing for absolute microbiome quantification.

iMeta·2026
Same author

Novel synthesis of 2-amino-6-[(4-hydroxy-1-oxopentyl)amino]hexanoic acid from lysine and γ-valerolactone.

Bioorganic chemistry·2025
Same author

Comprehensive Characterization of Kukui Nuts as Feedstock for Energy Production in Hawaii.

ACS omega·2023
Same author

Contaminant sorption on soil and indoor materials and its possible impact on transients in vapor intrusion- An example based upon trichloroethylene (TCE).

Journal of hazardous materials·2023
Same author

Estimation of vapor pressures of perfluoroalkyl substances (PFAS) using COSMOtherm.

Journal of hazardous materials·2022
Same author

LncRNA MALAT1 induced by hyperglycemia promotes microvascular endothelial cell apoptosis through activation of the miR-7641/TPR axis to exacerbate neurologic damage caused by cerebral small vessel disease.

Annals of translational medicine·2022

Related Experiment Video

Updated: May 28, 2026

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems
05:46

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems

Published on: January 24, 2014

Solid vapor pressure for five heavy PAHs via the Knudsen effusion method.

Jinxia Fu1, Eric M Suuberg

  • 1Brown University Department of Chemistry, Providence, RI USA 02912.

The Journal of Chemical Thermodynamics
|October 25, 2011
PubMed
Summary

This study measured the vapor pressures of five heavy polycyclic aromatic hydrocarbons (PAHs), crucial for understanding environmental contamination. Results provide essential data for predicting the fate and transport of these persistent organic pollutants.

More Related Videos

Determining Surface Areas and Pore Volumes of Metal-Organic Frameworks
06:45

Determining Surface Areas and Pore Volumes of Metal-Organic Frameworks

Published on: March 8, 2024

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

Related Experiment Videos

Last Updated: May 28, 2026

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems
05:46

High-pressure Sapphire Cell for Phase Equilibria Measurements of CO2/Organic/Water Systems

Published on: January 24, 2014

Determining Surface Areas and Pore Volumes of Metal-Organic Frameworks
06:45

Determining Surface Areas and Pore Volumes of Metal-Organic Frameworks

Published on: March 8, 2024

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

Area of Science:

  • Environmental Chemistry
  • Physical Chemistry

Background:

  • Polycyclic aromatic hydrocarbons (PAHs) are common subsurface contaminants from incomplete combustion and fuel processing.
  • Understanding PAH vapor pressure is critical for predicting their environmental fate and transport.
  • Five specific heavy PAHs, classified as US EPA priority pollutants, were investigated.

Purpose of the Study:

  • To accurately measure the solid vapor pressures of five heavy PAHs.
  • To determine the enthalpy of sublimation for these compounds.
  • To compare experimental solid vapor pressure data with adjusted sub-cooled liquid vapor pressure data.

Main Methods:

  • Knudsen effusion method was employed to measure vapor pressures between 364 K and 454 K.
  • The Clausius-Clapeyron equation was used to calculate enthalpy of sublimation.
  • Differential scanning calorimetry was used to measure enthalpy of fusion for data adjustment.

Main Results:

  • Experimental solid vapor pressures for benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[ghi]perylene, indeno[1,2,3-cd]pyrene, and dibenz[a,h]anthracene were determined.
  • Enthalpy of sublimation values were calculated for the studied PAHs.
  • Adjusted sub-cooled liquid vapor pressure data did not align with measured solid vapor pressures, but experimental results agreed with prior sublimation data.

Conclusions:

  • The study provides reliable experimental solid vapor pressure data for five heavy PAHs.
  • Discrepancies were noted between measured solid and adjusted liquid vapor pressures.
  • The findings contribute to a better understanding of PAH behavior in the environment.