Silver chloride permanganate

Neither silver bromide nor iodide react thus, and it is possible to estimate silver chloride in presence of iodides by means of this reaction, the excess of potassium ferroeyanide remaining after filtration being determined by titration with standard permanganate.3... 

The identification of the base is accomplished as follows. Since an aminophenol is formed in the stannous chloride reduction, the original structure was most probably that of an ester or an ether. 8 grams of the base is boiled with 80 cc. 20 per cent hydrochloric acid in a flask fitted with a downward condenser and steam is introduced simultaneously. A lachrymatory liquid distills. It is heavier than water and boils at 175°C. The compound, when warmed with silver nitrate, produces silver chloride. It is oxidized very rapidly by neutral permanganate solution to produce benzoic acid, m.p. 121°. The distillate is therefore benzyl chloride. 

Gold Chloride Permanganates Dichromates Mercuric chloride Molybdates Ferric salts Arsenates Silver salts... 

Potassium hydroxide Potassium iodide Potassium nitrate Potassium permanganate Silica, sand Silver, tarnished Silver chloride Sodium... 

Potassium acid oxalate Potassium alum dodecahydrate Potassium bromide Potassium carbonate Potassium manganate Potassium perchlorate Potassium permanganate Potassium persulfate Potassium thiocyanate PVP Pyrogallol Quinone Resorcinol Silver Silver chloride... 

With violet inks, and especially concentrated copying inks, the time required for oxidation with potassium permanganate is too long. The dye is therefore dissolved by immersing the specimen in a mixture containing 10 % perchloric acid, 5 % nitric acid, and 1 % silver nitrate. The violet dye turns yellow. After 5 minutes the reaction is stopped otherwise the paper is attacked too much. If the dye has not completely dissolved, it can be treated with potassium permanganate. Otherwise the silver nitrate is washed out with 1 % nitric acid, the paper rinsed with water, and the silver chloride reduced with the formaldehyde mixture, and so on. 

Dissolve 0 25 g in 10 ml of water in a 250-ml flask. Add 10 ml of 5 per cent silver nitrate solution, 10 ml of concentrated sulphuric acid and 2 g of powdered potassium permanganate, in portions, whilst digesting on a water-bath for thirty minutes. Decolorise the mixture by warming with hydrogen peroxide solution, filter and weigh the silver chloride as usual. 

Aluminum foil, Iodine powder. Carbon disulfide, 1,4,6,9-Tetrabromodiamantane, Sodium bisulfite. Hydrochloric acid. Methanol, Acetonitrile, Acetone, Sodium hydroxide. Magnesium sulfate. Potassium permanganate. Toluene Methylene chloride, 2-Bromomethanol, Trioxane, Aluminum chloride. Magnesium sulfate, Nitroform, Acetone, Sodium bicarbonate. Hexane, Silver nitrate. Acetonitrile 1,2-Dichloroethane, HexamethyldisUane, Iodine, Cyclohexane, 1,3-Dioxolane, Nitroform, Methylene chloride, Dimethylformamide, Sodium sulfate. Hydrochloric acid. Magnesium sulfate. Nitric acid. Sulfuric acid Sulfuryl chloride. Acetic anhydride. Nitric acid. Sodium bicarbonate. Sodium sulfate Nitric acid. Sulfuric acid, Malonamide Nitric acid. Sulfuric acid, Cyanoacetic acid Sulfuric acid, Acetasalicyclic acid. Potassium nitrate Nitroform, Diethyl ether, 1-Bromo-l-nitroethane, Sodium sulfuate... 

The detection and determination ot the perchlorates.—The perchlorates give no precipitates with silver nitrate or barium chloride soln. cone. soln. give a white crystalline precipitate with potassium chloride. Unlike all the other oxy-acids of chlorine, a soln. of indigo is not decolorized by perchloric acid, even after the addition of hydrochloric acid and they do not give the explosive chlorine dioxide when warmed with sulphuric acid unlike the chlorates, the perchlorates are not reduced by the copper-zinc couple, or sulphur dioxide. Perchloric acid can be titrated with —iV-alkali, using phenolphthalein as indicator. The perchlorates can be converted into chlorides by heat and the chlorides determined volumetrically or gravimetrically they can be reduced to chloride by titanous sulphate 28 and titration of the excess of titanous sulphate with standard permanganate they can be fused with zinc chloride and the amount of chlorine liberated can be measured in terms of the iodine set free from a soln. of potassium iodide and they can be... 

Sulphates and Chlorides. — Boil 0.5 gm. of potassium permanganate with a mixture of 2 cc. of 95 per cent alcohol and 25 cc. of water, and filter. The filtrate should be colorless, and, after adding to it 2 cc. of nitric acid, barium nitrate, and silver nitrate solutions, it should not develop more than a slight opalescence. 

Formic acid solution reacts as follows 11) with hydroxides, oxides, carbonates, to form formates, e g., sodium formate, calcium formate, and with alcohols to form eslers (2) with silver of ammonio-silver nitrate to form metallic silver (3) with ferric formate solution, upon heating, to form red precipitalc of basic ferric formate (4) with mercuric chloride solution to form mercurous chloride, white precipitate and (SI with permanganate lin the presence of dilute H-SOj) to form CO and manganous salt solution. Formic acid causes painful wounds when it ennies in contact with the skin. At IhO C. formic acid yields CO plus H . When sodium formate is heated in vacuum at 300°C. H- and sodium oxalate are formed. With concentrated ll.SOj heated, sodium formate, or other formate, or formic aeid. yields carbon monoxide gas plus water. Sodium formate is made by healing NaOH and carbon monoxide under pressure at 2I0 C. 

In the analytical determination of the hyponitrites, W. Zorn treated soln. of the free acid, or of its salts in cold dil. nitric acid with an excess of silver nitrate, and just neutralized the free acid with ammonia or sodium carbonate. The washed and dried precipitate was weighed as silver hyponitrite, or weighed as metal or chloride. A. Thum treated the aq. soln. of the acid with an excess of a soln. of permanganate, and in 15 minutes added sulphuric acid after standing for another hour the soln. was warmed to 30°, and treated with a known quantity of 0-1A-oxalie acid sufficient to decolorize the permanganate. The excess oxalic acid was determined by permanganate titration. A. Hantzsch and A. Sauer, and... 

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