Solving Centibarrer Equation - Hg Value & Proper Values

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SUMMARY

The discussion centers on the Centibarrer equation, specifically regarding the variable Hg, which represents centimeters of mercury, a unit of pressure. The equation provided is 10^-8x(cm^2-cm)/cm-Hg-sec-cm^2, and the user is attempting to calculate gas permeability using values of 1 square cm, 0.238125 cm thickness, and a time of one second. Proper understanding of the partial pressure difference across the membrane is crucial for accurate calculations.

PREREQUISITES
  • Understanding of gas permeability concepts
  • Familiarity with the Centibarrer equation
  • Knowledge of pressure units, specifically centimeters of mercury (cm Hg)
  • Basic algebra for solving equations
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  • Study the concept of partial pressure and its role in gas diffusion
  • Learn how to convert pressure units, particularly cm Hg to other pressure units
  • Explore practical examples of gas permeability calculations in materials science
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Students in chemistry or materials science, researchers studying gas permeability, and professionals involved in membrane technology or filtration systems.

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Homework Statement


I have an equation that tells you the number of cubic cm of gas permeable
through an item. But I'm not getting a proper answer.
what does Hg stand for and what is its value. does anyone know the proper values for this equation and how to solve.
the values I have are 1 square cm, .238125 cm thick, time is one second.
I think Hg is to be the partial pressure difference across the membrane.

Homework Equations


10^-8x(cm^2-cm)/cm-Hg-sec-cm^2


The Attempt at a Solution

 
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I've never heard of the centibarrer equation before but cm Hg probably means centimeters of mercury which is a pressure. Hope that helps.
 

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