Talk:Karl Fischer titration
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What can be used to keep the free water in a sample from condensing on the side of the sample container. Once it has condensed on the side of the container is there anyway to put the water back into the hydrocarbon in order to get a reliable test result?
Colors needed
editI suggest describing the colors of the solution before and after the end point. Thomas.Hedden (talk) 14:17, 14 April 2009 (UTC)
Disadvantages?
editI'd like to see some discussion about whether impuries such as acid, base or alcohols in the sample or presence of hydroxyl groups on the compound of interest would skew the results. —Preceding unsigned comment added by 192.58.204.226 (talk) 15:25, 29 October 2009 (UTC)
Comment
editThe described method is the coulometric alternative of Karl Fisher's titration. This is more precise as the titration consist in measuring the amount of electron used. There is no volumetric titration in this case.
The most common Karl Fisher titration consist in a reagent poured in the titration cell and a titration solution. After introducing the sample, the volumetric titration start until equivalent point, measured by the conductivity change of the solution. — Preceding unsigned comment added by 194.250.87.84 (talk) 09:08, 29 October 2012 (UTC)
Equation is wrong?
editIt seems that the described equation is inaccurate. The equation suggests a 2 to 1 molar equivalency of water to Iodine, but the sentence below the equation suggests 1 to 1. Brief googling suggests a different equation than the one shown on the wiki page. Here, for example. https://byjus.com/chemistry/karl-fischer-titration/ Can anyone else with more experience verify this? Willmskinner (talk) 22:56, 28 February 2024 (UTC)
- I'm seeing the inverse. The equation as currently displayed shows one water molecule reacting with one iodine molecule, while the following sentence claims two moles of water to one mole of iodine. Either the equation or the sentence is incorrect. Since the equation matches the equation from the page you linked to, I would expect it is the sentence that is incorrect. Syruphead (talk) 18:47, 28 October 2024 (UTC)