This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...drops of caustic soda solution. Warm, if necessary. (b). Add dilute calcium chloride or magnesium chloride solution to the rest of the solution. What is the curdy precipitate that forms? CHAPTER XIV. SILICON AND BORON. Silicon. 1. To a little sodium silicate (water glass) solution in a test tube add a ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...drops of caustic soda solution. Warm, if necessary. (b). Add dilute calcium chloride or magnesium chloride solution to the rest of the solution. What is the curdy precipitate that forms? CHAPTER XIV. SILICON AND BORON. Silicon. 1. To a little sodium silicate (water glass) solution in a test tube add a few drops of concentrated hydrochloric acid. Repeat the experiment, using ammonium chloride solution in place of hydrochloric acid. Collect the precipitated jelly on a filter. Wash with hot water. Is this jelly soluble in water? In acids? In alkalies? Test a little of it appropriately. Heat the substance on the lid of a crucible, at first gently then strongly, breaking up the lumps that form. Note the changes carefully. Test the solubility of this residue in hydrochloric, nitric, sulphuric, and also nitro-hydrochloric acids; also in caustic alkalies. 2. On platinum foil fuse a mixture of 1 part very finely powdered silica and five parts of sodium carbonate. Digest with boiling water, filter, and add hydrochloric acid to the filtrate. Evaporate to dryness; add hot water and filter. What is the insoluble substance which remains? How test it further? 3. Fuse a little silica into a bead of microcosmic salt. 4. Compare the experiments made under fluorine. 5. Add potassium nitrate solution to solution of fluosilicic acid. What is the precipitate? Save it for the test mentioned below. 6. Add barium chloride solution to solution of fluosilicic acid. What is formed? 7. In a test tube treat the potassium fluosilieate with strong sulphuric acid. What forms? Heat and prove that the fumes escaping are silicon fluoride. Boron. 8. To 100 cc. hot water add 20 grams borax and stir till all has dissolved, then add 25 cc. strong hydrochloric acid. Cool;...
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Add this copy of Laboratory Exercises in General Chemistry, to cart. $15.86, fair condition, Sold by Basement Seller 101 rated 5.0 out of 5 stars, ships from Cincinnati, OH, UNITED STATES, published 1915 by Cantwell Printing Company.
