Pneumatic trough

Pneumatic trough with bulb suspended from hanger, as invented by Stephen Hales

A pneumatic trough is a piece of laboratory apparatus used for collecting gases, such as hydrogen, oxygen and nitrogen. It is mainly made of glass or various fibres and are of various sizes. It was invented by Stephen Hales.[1]

Description

Four items are required for gas collection with a pneumatic trough:[2]

  • The trough itself, which is a large glass dish or a similar container.
  • A gas bottle (or bulb), to hold the gas collected.
  • A way to support the gas bottle or bulb, such as a beehive shelf or a hanger (as with Stephen Hales' design).
  • A liquid in the trough.

Liquid

Pneumatic troughs require a liquid such as water. Scientists also have used mercury in pneumatic troughs, but usually only for the collection of water-soluble gases. Health and safety issues surrounding mercury generally prohibit its use in modern-day pneumatic troughs.[3]

Usage

Pneumatic trough, and other equipment, used by Joseph Priestley

The bottle is filled with water, inverted, and placed into the pneumatic trough already containing water. The outlet tube from the gas-generating apparatus is inserted into the opening of the bottle so that gas can bubble up through it, displacing the water within.[4]

See also

References

  1. ^ Pneumatic Trough - Labappara scientific instrument, vol. 1, 2022-08-21, p. 2, archived from the original (PDF) on 2022-08-21, retrieved 2022-08-21
  2. ^ Günther, Matthias; Joemann, Michael; Csambor, Simon. "Chapter 5: Parabolic Trough Technology" (PDF). Advanced CSP Teaching Materials. 5 (12): 10. Archived (PDF) from the original on 2022-07-09. Retrieved 2022-08-21 – via University of Kassel.
  3. ^ Tang, Can; Gong, Peng; Xiao, Taishi; Sun, Zhengzong (2021-12-13). "Direct electrosynthesis of 52% concentrated CO on silver's twin boundary". Nat Commun. 9 (21): 12. Bibcode:2021NatCo..12.2139T. doi:10.1038/s41467-021-22428-1. PMC 8035331. PMID 33837209.
  4. ^ "Impact of a water-filled bottle". abaqus-docs.mit.edu. Massachusetts Institute of Technology. Archived from the original on 2022-08-21. Retrieved 2022-08-21.

Further reading

Stub icon

This science-related article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.