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. 1903 Excerpt: ...clear anode liquid be then syphoned off and allowed to stand to cool in a well-stoppered vessel. The salt, which is more easily soluble at a higher temperature, then separates slowly in granular crusts, which contain between 85 and 99 per cent. of lead disulphate. The deposit at the bottom of the anode chamber is ...
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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. 1903 Excerpt: ...clear anode liquid be then syphoned off and allowed to stand to cool in a well-stoppered vessel. The salt, which is more easily soluble at a higher temperature, then separates slowly in granular crusts, which contain between 85 and 99 per cent. of lead disulphate. The deposit at the bottom of the anode chamber is worked up in the usual way. No satisfactory method of purifying the whole amount of the reaction product has yet been discovered. If the formation of lead disulphate is progressing well, the lead anodes go steadily into the solution and become in this way bright, just as though they were freshly amalgamated, and they appear in colour and polish more like zinc than lead. Lead disulphate is a quite indefinite crystalline powder, white, but generally slightly yellowish, difficultly soluble in concentrated sulphuric acid and pyro-sulphuric acid giving a pale yellowish-green coloured solution. With all solvents otherwise generally employed it either undergoes combination or is insoluble. Water immediately decomposes lead disulphate into sulphuric acid and lead peroxide or its hydrate. Dilute sulphuric acid produces a hydrolytic decomposition which is the more rapid the greater the dilution of the acid; the limit for this reaction lies at about 1-650 to 1-653 sp. gr. at ordinary temperatures. The more concentrated the sulphuric acid, the higher the temperature which the solution is able to stand; for instance, with acid of 1-70 sp. gr., it can be heated to about 50 C. before lead peroxide separates. In acid of 1-80 and above the hydrolytic decomposition does not occur; here at about 100 C. evolution of oxygen takes place. Pb(SO4)2 = PbSO4 ] SO3 + O. Plumbic sulphate is a strong oxidizing agent which in most cases acts in the same manner but more powerful...
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Add this copy of Electrolytic Preparations: Exercises For Use In The to cart. $12.95, very good condition, Sold by Something Special 8192 rated 5.0 out of 5 stars, ships from Acworth, GA, UNITED STATES, published 1903 by Edward Arnold.
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Add this copy of Electrolytic Preparations: Exercises For Use In The to cart. $43.92, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2010 by Kessinger Publishing.
Add this copy of Electrolytic Preparations: Exercises for Use in the to cart. $54.52, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2007 by Kessinger Publishing.
