The book A Short Course in Quantitative Chemical Analysis was written by author Appleton, John Howard, B. 1844 Here you can read free online of A Short Course in 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 Short Course in Quantitative Chemical Analysis a good or bad book?
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— Filter the mass and wash the precip- itate thoroughly with boiling water."' Finally dry the precipitate, ignite it, and weigh it as Silicic oxide, also called Silica (Si Oj). 112. The change of the silicates to the soluble form depends upon the fact that though all silicates are insol- uble when the Silica predominates, the alkaline silicates are soluble when the alkali metal predominates. 113. Great care must be taken in using platinum ves- sels. When heated, they should rest on platinum tri...an- gles ; there should not be heated in them any substances likely to injure thepi. (Read carefully note 35, p. 74.) 114. It is always better to thoroughly dissolve the fused mass in water before adding Chlorohydric acid, otherwise the action of the acid — by decomposing the alkaline Silicate upon the outside of the mass — coats the whole over with insoluble Silicic acid, before the inside of the mass is acted upon. 115. Drying upon a water-bath is necessary; upon the application of strong heat to the gelatinous precipitate of Silicic acid the steam formed within the lumps bursts them, and thus occasions loss.
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