Memoirs and Proceedings of the Chemical Society of London

Memoirs and Proceedings of the Chemical Society of London

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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. 1845 edition. Excerpt: ...0'243 sulphate of barytes=O'l59 barytes. This gives 818 chlorine to 957 barytes. ll. 1'4-68 chloride of silver =0'36l chlorine. 0'654-sulphate of barytes=0'4-29 barytes. This gives 805 chlorine to 957 barytes. III. 1'836 chloride of silver =O'4-53 chlorine. 0'781 sulphate of barytes=0'5l8 barytes. This gives 843 chlorine to 957 barytes. The average of these three gives 822 chlorine to 957 bary tes, or nearly 2 equivalents. ' The question which now naturally presents itself is, in what manner can the chlorine be contained in this liquid, and in what combinations? The following experiments were instituted in order to ascertain this: --T 0 part of the original liquid a solution of nitrate of silver was added, by which a pure white precipitate of chloride of silver was formed, which increased by standing. Another portion was treated with barytes water until the smell and bleach ing reaction of hypochlorous acid had disappeared. Nitrate of silver now formed a black precipitate, which gradually decomposed, giving ofi' oxygen. The cause of this striking difference in the two reactions is evidently that in the first instance all the base was combined with chlorine in the form of chloride, while hypochlorous acid remaining free in the liquid, gradually increased the precipitate by its own decomposition. In the second case, the hypochlorous acid being combined with barytes gave the black precipitate, consisting of a mixture of chloride with peroxide of silver. To test the correctness of this explanation the Following experiments were made: --Aqueous hypochlorous acid was neutralized with barytes. This salt possessed no bleaching properties. Carbonic acid precipitated carbonate of barytes. The liquid, after separation from the precipitate, more

Product details

  • Paperback | 182 pages
  • 189 x 246 x 10mm | 336g
  • United States
  • English
  • black & white illustrations
  • 1236984927
  • 9781236984920