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3base (Hive Bee) 06-08-02 17:27 No 318864 |
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aq.HBr/HI from KBr/KI & tartaric acid (Rated as: excellent) |
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hydrobromic acid decomposition of potassium bromide in water by means of tartaric acid, and decanting the aqueous acid formed from the percipitated bitartrate of potassium: the product contains some undecomposed bromide of potassium as well as bitartrate. the latter may be more completely removed by the addition of alcolhol, filtering, and expelling the alcohol by evaporation. the acid produced by this method is very liable to decomposition on keeping. the writer has never seen any such acid which did not in time turn yellow. the journal of the society of chemical industry 1884-jan-29 <3>: 20-23 "a review of the present methods of preparing hydrobromic acid, and a description of a process for preparing it from bromide of zinc and sulphric acid" by ad. sommer (san francisco) hydroiodic acid 27.5 weightparts potassium iodide are dissolved in 48 parts distilled water, moreover 22 weightparts tartaric acid likewise in 48 parts water, then mix both solutions, place the mix in a cooling mixture, until the thereby generated cream of tartar (potassium hydrogen tartrate) is completely separated and deposited, thereafter decant and filtrate the ready hydroiodic acid. ... the acid already becomes yellow after some hours. (therefore the author recomends to retail the acid immediately) (pharmazeutische zeitschrift fuer russland, 1863 p. 302) polytechnisches journal (herausgegeben von dr. emil maximilian dingler) 1864 171.band(?) or 4.reihe 21.band(?): p. 466 "ueber bereitung von jodammonium"; gottfried berner (in moskau) |
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PolytheneSam (Master Searcher) 06-08-02 17:48 No 318865 |
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KBr/KI & citric acid | Bookmark | |||||
Anything on KBr/KI & citric acid? http://www.geocities.com/dritte123/PSPF. The hardest thing to explain is the obvious |
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