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Analytical chemistry
Industry: Chemistry
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Analytical chemistry
Huber’s reagent
Chemistry; Analytical chemistry
Aqueous solution of ammonium molybdate and potassium ferrocyanide used as a reagent to detect free mineral acid.
Hubl’s reagent
Chemistry; Analytical chemistry
Solution of iodine and mercuric chloride in alcohol; used to determine the iodine content of oils and fats.
Ilkovic? equation
Chemistry; Analytical chemistry
Mathematical relationship between diffusion current, diffusion coefficient, and active-substance concentration; used for polarographic analysis calculations.
Jacquemart’s reagent
Chemistry; Analytical chemistry
Analytical reagent used to test for ethyl alcohol; consists of an aqueous solution of mercuric nitrate and nitric acid.
Karl Fischer reagent
Chemistry; Analytical chemistry
A solution of 8 moles pyridine to 2 moles sulfur dioxide, with the addition of about 15 moles methanol and then 1 mole iodine; used to determine trace quantities of water by titration.
Karl Fischer technique
Chemistry; Analytical chemistry
A method of determining trace quantities of water by titration; the Karl Fischer reagent is added in small increments to a glass flask containing the sample until the color changes from yellow to ...
Kjeldahl method
Chemistry; Analytical chemistry
Quantitative analysis of organic compounds to determine nitrogen content by interaction with concentrated sulfuric acid; ammonia is distilled from the NH 4 SO 4 formed.
