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12:13 Feb 4, 2016 |
Dutch to English translations [PRO] Science - Chemistry; Chem Sci/Eng / titration | |||||||
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| Selected response from: Barend van Zadelhoff Netherlands Local time: 05:17 | ||||||
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Summary of answers provided | ||||
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3 +1 | titration/titrimetry |
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4 | standardization (of the titrating solution) |
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titration/titrimetry Explanation: I really don't see any problem with this: ...a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte https://en.wikipedia.org/wiki/Titration |
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standardization (of the titrating solution) Explanation: As you are a chemist you must be right. zie the definition you found in Wikipedia: Veel stoffen die als titrant gebruikt worden zijn lastig zuiver te verkrijgen, of reageren makkelijk (met componenten uit de lucht of anderszins). Om deze reden wordt regelmatig de concentratie van de titrant (titrating solution) vastgesteld met behulp van een wel makkelijk zuiver te verkrijgen stof, de oertiterstof (primary standard). De bepaling waarin de concentratie van een titrant nauwkeurig bepaald wordt, noemt men titerstelling. In oudere teksten is hier dan sprake van sterktebepaling. --> nauwkeurige bepaling van de concentratie van de titrating solution: http://tinyurl.com/goegrso The concentration of a base titrating solution can be determined in one of two ways: 1. By using the base solution to titrate a standard acid solution of precisely known concentration, such as commercially available 0.100 M HCl. 2. By using the base solution to titrate a known amount of a “primary standard”, a solid acid that can be weighed easily and that reacts with base in a known stoichiometric manner. You will utilize the second procedure and use a solid acid primary standard to standardize the NaOH solution. Requirements for a primary standard acid are: It must exist in very pure form, preferably as a crystalline solid. It must be chemically stable, must not react with atmospheric oxygen or absorb water from the air. It should have a high formula mass to minimize the effect of weighing errors. It must react in a known manner with the solution to be standardized. http://tinyurl.com/hdv5ml8 -------------------------------------------------- Note added at 1 day4 hrs (2016-02-05 16:50:53 GMT) Post-grading -------------------------------------------------- You were and are 100% right, Moira, even if the word 'titerstelling' may sound a bit peculiar or confusing. This is not just about titration. Obviously this is about standardisation (you prefer I use an s rather than a z in standardis/zation :-)) of a solution by using a reference solution, de 'oertiterstof' = the primary standard. The Wikipedia explanation/definition and the reference I found are almost identical. De 'oertiterstof' = primary standard exists in very pure form and is chemically stable etc. I am not a chemist but I do understand something about it. I studied medicine. You need to have done chemistry and physics in secundary education in order to be able to start this study. Then you had medical chemistry and biochemistry (with a book like Harper's review of biochemistry) and more during the medical studies. |
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