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Determination of the Diffusion Coefficient of Vapors by Means of a Microbalance

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Vacuum Microbalance Techniques

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Abstract

Determination of the diffusion coefficient of vapors in gases by Stefan’s method leads to results of rather low reliability. Improvement can be attained by using a recording microbalance. The determination is performed by recording the loss of weight of a small bucket containing a liquid evaporating through a narrow vertical tube. The suspension wire is placed in the axis of the tube. In the case of very narrow tubes (Ø < 10−3 m), tube and container are weighed as a whole.

Variations in apparent weight may occur due to variations in the room temperature and to electrical charges. Small variations in temperature of the evaporating liquid have a very strong influence, especially at higher evaporation rates.

The diffusion coefficient of water vapor in air is determined at 323, 333, and 343 K.

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References

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Author information

Authors and Affiliations

  1. Physics Department, Eindhoven University of Technology, Eindhoven, Netherlands

    K. M. Dijkema & J. C. Stouthart

Authors
  1. K. M. Dijkema
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  2. J. C. Stouthart
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Editor information

Editors and Affiliations

  1. Eindhoven University of Technology, Eindhoven, Netherlands

    C. H. Massen  & H. J. van Beckum  & 

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© 1970 Plenum Press, New York

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Dijkema, K.M., Stouthart, J.C. (1970). Determination of the Diffusion Coefficient of Vapors by Means of a Microbalance. In: Massen, C.H., van Beckum, H.J. (eds) Vacuum Microbalance Techniques. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0725-0_8

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  • DOI: https://doi.org/10.1007/978-1-4757-0725-0_8

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-0727-4

  • Online ISBN: 978-1-4757-0725-0

  • eBook Packages: Springer Book Archive

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