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. 1921 Excerpt: ...of it as taking place in three steps. Sulphuric acid reacts with potassium bromide to produce potassium sulphate and hydrogen bromide: 2 KBr + H2S04---K2S04 + 2 HBr Manganese dioxide acts as an oxidizing agent, oxidizing the hydrogen of the hydrobromic acid to water and liberating bromine: 2HBr + 0--J-H20 + Br2 ...
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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. 1921 Excerpt: ...of it as taking place in three steps. Sulphuric acid reacts with potassium bromide to produce potassium sulphate and hydrogen bromide: 2 KBr + H2S04---K2S04 + 2 HBr Manganese dioxide acts as an oxidizing agent, oxidizing the hydrogen of the hydrobromic acid to water and liberating bromine: 2HBr + 0--J-H20 + Br2 Manganese unites with the SO4 radical, forming manganese sulphate. The equation for the complete reaction is: 2 KBr + MnQ, + 2 H2S04---K2S04+MnS04+ 2 H20 + Br2 289. Physical Properties.--Bromine is a dark brownish red liquid, about three times as dense as water. It is the only non-metallic element that exists in the state of a liquid under ordinary conditions. Bromine has an odor somewhat resembling that of chlorine; its name is derived from a Greek word meaning stench. Bromine vaporizes so easily that when a bottle of bromine is opened, the brownish red vapor of bromine can be seen issuing from the mouth of the bottle. If a few drops of bromine are poured into a large bottle filled with air, the vapor is seen first at the bottom of the bottle, and from here it diffuses slowly until it fills the bottle. The vapor of bromine has a destructive action on the mucous membrane. When it comes into contact with the eyes, the irritation is sufficient to cause a copious flow of tears. Great care should be taken not to inhale bromine vapor, and never to allow the bromine to come in contact with the skin. If bromine is accidentally inhaled, the irriUSES OF BROMINE 297 tation can be lessened by smelling of ammonia, chloroform, or alcohol. If bromine should come in contact with the skin, the injured part should be washed freely with water and then covered with a paste made by mixing sodium bicarbonate with water, or better, with some oil, as olive or cocoanut. Bro...
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Add this copy of Elementary Principles of Chemistry to cart. $107.00, very good condition, Sold by Basement Seller 101 rated 5.0 out of 5 stars, ships from Cincinnati, OH, UNITED STATES, published 1921 by Allyn & Bacon.
