This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1849 Excerpt: ...precipitation. According to Fritzsche, it consists wholly or for the most part of--carbonate of magnesia. The constitution of magnesia alba is affected by the following circumstances: 1. The relative quantity of lhe precipitant. When an excess of carbonate of soda is used, the precipitate retains a portion of that ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1849 Excerpt: ...precipitation. According to Fritzsche, it consists wholly or for the most part of--carbonate of magnesia. The constitution of magnesia alba is affected by the following circumstances: 1. The relative quantity of lhe precipitant. When an excess of carbonate of soda is used, the precipitate retains a portion of that reagent, and is thereby rendered more dense; when sulphate or hydrochlorate of magnesia is in excess, it contains a small quantity of sulphuric or hydrochloric acid, and is lighter; carbonate of potash may be used in excess. (Berzelius.) The precipitate does not become granular with an excess of the alkaline carbonate so readily as with an excess of the magnesia salt. (Fritzsche.) In Durand's method the carbonate of soda somewhat predominates.--2. Degree of dilution. The more dilute the two solutions are, the lighter is the precipitate, and the more normal salt does it contain. (Berzelius.) Durand, on the contrary, employs concentrated solutions.--3. Temperature. The precipitate formed in the cold consists chiefly of hydrated normal salt; a large quantity of magnesia at the same time remaining in solution, because the normal salt is resolved by the action of the water into an insoluble basic salt, and an acid salt which is dissolved. On applying heat, the carbonic acid is expelled from this solution, and the greater part of the magnesia is thrown down; at the same time, the remaining normal salt contained in the original precipitate is resolved into a basic salt, and carbonic acid which escapes. When this mixture is boiled for a long time, the precipitate is converted into f-carbonate of magnesia. The salt is lightest when precipitated in the cold. (Berzelius.) When moderately boiled, which is usually the case, the precipitate is converted into th...
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Add this copy of Hand-Book of Chemistry (Volume 15) to cart. $22.68, fair condition, Sold by Anybook rated 4.0 out of 5 stars, ships from Lincoln, UNITED KINGDOM, published 1862 by Cavendish Society.
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Seller's Description:
Volume 15. This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In fair condition, suitable as a study copy. No dust jacket. Octavo size. Cloth boards. Gilt lettering on spine. Gilt bookstamp on cover. Rubbed covers and spine. Bumped corners. Binding visible and loose. Pages clean. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 900grams, ISBN:
Add this copy of Hand Book of Chemistry; Volume 3 to cart. $24.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Hand Book of Chemistry; Volume 3 to cart. $34.31, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
