A Compendious Manual Of Qualitative Chemical Analysis

Paperback | May 13, 2012

byCharles William Eliot

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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. 1868 Excerpt: ... Kke bleaching effect. Nitrate of potassium is a suitable material on which to illustrate the tests for nitrates. 73. Chlorates. The preliminary examination gives warning; of the presence of chlorates. When a few particles of a chlorate in the solid form arecovered with two or three times as much strong sulphuric acid, and the mixture is gently warmed, the liquid becomes intenselyyellow, and a greenish-yellow irritating gas of peculiar odor (hypochloric acid, ClOj) is evolved, which explodes with violence at a moderate heat After this decomposition, the gas. evolved has the characteristic odor of chlorine. The quantity of chlorate operated upon should be very small. The solution of a chlorate decolorizes indigo-solution precisely like the solution of a nitrate, under like conditions (§ 72).. A chlorate is converted by ignition into chloride, from a solution of which nitrate of silver precipitates the chlorine. Chlorate of potassium illustrates very well the reactions of chlorates. 74. Acetates. When acetates are moderately heated with,strong sulphuric acid, hydrated acetic acid distils from the mixture, and may be recognized by its pungent odor. When an acetate is heated with alcohol and sulphuric acid in equal volumes, acetic ether is formed. The agreeable odor of this ether is highly characteristic. Hot concentrated sulphuric acid produces no blackening with an acetate. When a few drops of a solution of ferric chloride (§ 92,.) are added to a solution of a neutral acetate, or to a solution of an acetate previously neutralized with ammonia, the liquid acquires a dark red color, because of the formation of ferric acetate. If the liquid contain an excess of the acetate, a basic acetate of iron is precipitated in yellow flocks upon boiling, and the ...

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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. 1868 Excerpt: ... Kke bleaching effect. Nitrate of potassium is a suitable material on which to illustrate the tests for nitrates. 73. Chlorates....

Format:PaperbackDimensions:50 pages, 9.69 × 7.44 × 0.1 inPublished:May 13, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217662404

ISBN - 13:9780217662406

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