The Quantitative Determination of Chromium
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In all probability there is a small quantity of man- ganous chromate formed which is only slowly decomposed by ammoniacal hydrogen peroxide. Complete solution of the chrom- ium was obtained in every case after three treatments with am- monia and hydrogen peroxide, the liquid being well boiled after each addition of hydrogen peroxide and the volume kept at about one hundred c. C. The separation of the chromium and the man- ganese was complete, as is shown by the following results. The chromium w...as precipitated as mercurous chromate and weighed as chromium sesquioxide : Potassium Permanganate Chromic Oxide Taken Taken Found 0. 0183 gms. 0. 2007 gins. 0. 1999 gins.
0. 0183 " 0. 2007 " 0. 2007 " 0. 0183 " 0. 2007 " 0. 2009 " 0. 0183 " 0. 2007 " 0. 2011 " 0. 0183 " 0. 2007 " 0. 2004 " Average Error 0. 04% The presence of a slight yellow color in the nitrates obtained after extracting the ignited chromium sesquioxide with water is not always indicative of the presence of soluble chromate, but may be due to the presence of very finely divided sesquioxide in suspension.
What to read after The Quantitative Determination of Chromium?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Rush Alexander to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In all probability there is a small quantity of man- ganous chromate formed which is only slowly decomposed by ammoniacal hydrogen peroxide. Complete solution of the chrom- ium was obtained in every case after three treatments with am- monia and hydrogen peroxide, the liquid being well boiled after each addition of hydrogen peroxide and the volume kept at about one hundred c. C. The separation of the chromium and the man- ganese was complete, as is shown by the following results. The chromium w...as precipitated as mercurous chromate and weighed as chromium sesquioxide : Potassium Permanganate Chromic Oxide Taken Taken Found 0. 0183 gms. 0. 2007 gins. 0. 1999 gins.
0. 0183 " 0. 2007 " 0. 2007 " 0. 0183 " 0. 2007 " 0. 2009 " 0. 0183 " 0. 2007 " 0. 2011 " 0. 0183 " 0. 2007 " 0. 2004 " Average Error 0. 04% The presence of a slight yellow color in the nitrates obtained after extracting the ignited chromium sesquioxide with water is not always indicative of the presence of soluble chromate, but may be due to the presence of very finely divided sesquioxide in suspension.
What to read after The Quantitative Determination of Chromium?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Rush Alexander to read onlineMoreLess
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