The book A Text book of Quantitative Chemical Analysis was written by author Alex Charles Cumming Here you can read free online of A Text book of Quantitative Chemical Analysis book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Text book of Quantitative Chemical Analysis a good or bad book?
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C. Of concentrated hydrochloric acid and 5 c. C. Of alcohol. Heat for a few minutes, and determine the sulphate according to the instructions on p. 131. Determination of Other Metals. The filtrate from the barium sulphate contains the other metals which were present in the original ore, and may be further examined, if desired. ANALYSIS OP ZINC BLENDE. Zinc blende consists essentially of zinc sulphide, but usually contains also traces of carbonate, cadmium, copper, lead, iron, and manganese. Wit...h most samples there is associated a certain amount of adhering silicious matter. OUTLINE OF METHOD. One portion of the blende is decomposed with hydrochloric acid, and the insoluble residue is separated. Lead is 246 ANALYSIS OF SIMPLE ORES AND ALLOYS determined in the filtrate as sulphate. After removal of the lead, the copper is precipitated by means of hydrogen sulphide from a strongly acid solution ; the cadmium is then precipitated in a similar manner from a slightly acid solution. After removal of the copper and cadmium, the iron is precipitated by means of " cupferron, " and the manganese is then separated as dioxide.
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