Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Hur fungerar en glaselektrod?
Halmstad University, School of Teacher Education (LUT).
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

To understand the glass electrode needs knowledge from more than one level. The construction ofthe glass electrode is one part, an other is the composition and structure of glass. The Nernstequation have an important role, but also the sources of errors in the analysis and the calibration ofthe glass electrode. Focus for this article is how the glass electrode really works and how Gibbs freeenergy made the potential dependent of the concentration of H+and gives the logarithm to thefunction. Nikolskii's ion exchange theory starts to explain the question about how the potentialcreates and Baucke's dissociation mechanism made it more explicit. The big different in theequations from the both theories respectively is the meaning of the constants, but for practical useof the glass electrode in analysis it is not important when the value of the constant is given bycalibration. This is not an excuse for that fact that the dissociation mechanism is more completethan the ion exchange theory in the understanding of the glass electrode.

Abstract [sv]

För att förstå hur glaselektroden fungerar krävs kunskap från mer än ett plan. Glaselektrodenskonstruktion är en del, glasets kemiska struktur en annan. Nernst ekvationen spelar en viktig roll,men även felkällorna i de analyser som görs med glaselektrod, (vanligtvis pH-mätning), samtkalibreringen av glaselektroden. I den här uppsatsen ligger fokus på hur glaselektroden faktisktfungerar och hur Gibbs fria energi gör potentialen beroende av koncentrationen vätejoner och tillförlogaritmen i funktionen för glaselektroden. Nikolskii's ion exchange theory påbörjar förklaringen avpotentialens uppkomst och Baucke's dissociation mechanism gör den tydligare. Skillnaden mellanrespektive teori och dess matematiska funktion är konstantens innebörd och betydelse, men för denpraktiska användningen av glaselektroden till analyser är detta av mindre vikt då konstantens värdefås genom kalibrering. Detta är dock ingen ursäkt för det faktum att the dissociation mechanism geren mer fullständig förklaring och ökad förståelse för hur glaselektroden fungerar än the ionexchange theory.

Place, publisher, year, edition, pages
2013. , 21 p.
Keyword [en]
pH, glassmembran, electrode, Nikolskii's ion exchange theory, Baucke's dissociation mechanism
Keyword [sv]
pH, glasmembran, elektrod, Nikolskii's ion exchange theory, Baucke's dissociation mechanism
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:hh:diva-21539OAI: oai:DiVA.org:hh-21539DiVA: diva2:607111
Subject / course
Chemistry
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2013-03-05 Created: 2013-02-21 Last updated: 2013-03-05Bibliographically approved

Open Access in DiVA

Hur fungerar en glaselektrod?(204 kB)1612 downloads
File information
File name FULLTEXT01.pdfFile size 204 kBChecksum SHA-512
ca92fbeb2d707c566121f164a3fa6e767e4aa1879601132bc3601a5286afb186d5e87eca07b588848f5b998c544c3c18a3ce9e1be88a76a65491d289dee7cf11
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Claesson, Jenny
By organisation
School of Teacher Education (LUT)
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 1612 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 160 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf