| 单词 | potassium carbonate |
| 例句 | Acetic acid reacts with potassium carbonate according to the following equation: Chemistry 2019-02-14T00:00:00Z The resulting solution of potassium carbonate is filtered and exposed to a slurry of calcium hydroxide. Extracting carbon dioxide from the air is possible. But at what cost? 2018-06-07T04:00:00Z Pyrogen involves a mixture of gases including potassium carbonates, nitrogen, carbon dioxide, carbon monoxide, nitrogen oxide and ammonia. Thailand chemical accident in Bangkok bank kills eight - BBC News 2016-03-14T04:00:00Z The plant uses fans to push air through towers containing potassium hydroxide solution, which reacts with CO2 to form potassium carbonate; the remaining air, now containing less CO2, is released. Companies that suck carbon from air line up customers 2015-10-13T04:00:00Z They also advise the use of potassium carbonate. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z When animal fats are treated with a base like potassium carbonate or sodium hydroxide, glycerol and salts of fatty acids such as palmitic, oleic, and stearic acid are formed. Chemistry 2019-02-14T00:00:00Z It will be seen above that these lees were rendered stronger by the action of fire, in which case the tartar was reduced to potassium carbonate. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z It is sometimes present in the ash to the extent of 30%, being converted into potassium carbonate by burning. Tobacco Leaves Being a Book of Facts for Smokers 2011-09-12T02:00:31.107Z Phosphorus is determined in the ash by fusing it with a mixture of sodium and potassium carbonates, extracting the residue with hydrochloric acid, and twice evaporating to dryness with the same acid. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The potassium carbonate has been recommended as an active agent in the amelioration of this affection; it is probably valuable in rendering the secretion less tenacious. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The greater the weight of potassium carbonate added to reach the point where the bubbling ended, the more concentrated the vinegar. Chemistry 2019-02-14T00:00:00Z A search in a book on elementary chemistry disclosed the further truth that the commercial name for “potassium carbonate” is pearlash! Household Administration Its Place in the Higher Education of Women 2011-07-20T02:00:13.547Z Potassium chromate, K2CrO4, may be prepared by neutralizing a solution of potassium bichromate with potassium carbonate or with caustic potash. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Then prepare a powdery silicate mix of sand and potassium carbonate. Moonlighting as a Conjurer of Chemicals 2010-10-11T20:50:00Z Potash, or potassium carbonate, is also used in many industrial products, and in certain animal feeds. BHP Billiton launches hostile bid for Potash Corporation 2010-08-18T07:47:00Z Potash is the common name for fertilizer derived from potassium, and includes potassium carbonate and other salts. BHP Bids for Potash 2010-08-18T04:02:00Z Caustic soda or potash or lyes made from these alkalis upon exposure to the air are gradually converted into sodium or potassium carbonate by the action of the carbon dioxide contained in the air. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. We may obtain colloidal precipitates exactly analogous to coagulated albumin by mixing a weak solution of chloride of calcium with potassium carbonate or tribasic phosphate. The Mechanism of Life When heated with ammonia it yields guanidine, and on boiling with alcoholic potash it yields potassium carbonate. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" In one case, for example, decinormal solutions of potassium carbonate and potassium bichromate were used. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" The manufacture of glass, also practised in Egypt, demanded a knowledge of sodium or potassium carbonates; the former occurs as an efflorescence on the shores of certain lakes; the latter was obtained from wood ashes. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Sodium or potassium carbonate can be weighed more easily as they do not rapidly absorb moisture from the air. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. The calcareous capsules grown in a saturated solution of potassium carbonate or phosphate often take a regular ovoid form. The Mechanism of Life A variety of animal charcoal is sometimes prepared by calcining fresh blood with potassium carbonate in large cylinders, the mass being purified by boiling out with dilute hydrochloric acid and subsequent reheating. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Account for the fact that solutions of sodium carbonate and potassium carbonate are alkaline. An Elementary Study of Chemistry Agitate distillate with dry potassium carbonate, and draw off some of the supernatant fluid for testing. Aids to Forensic Medicine and Toxicology Purified potassium carbonate is known as pearl ash. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Very beautiful growths may be obtained by sowing calcium chloride in a solution of potassium carbonate, with the addition of 2 per cent. of a saturated solution of tribasic potassium phosphate. The Mechanism of Life The less pure samples will show an excess of alkalinity because of the presence of sodium carbonate or of potassium carbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. If potassium carbonate is substituted for the sodium carbonate, the glass is much harder and less easily fused; increasing the amount of sand has somewhat the same effect. An Elementary Study of Chemistry Tests.—Precipitated from its solutions by potassium carbonate or sulphuric acid. Aids to Forensic Medicine and Toxicology The methods of manufacture are the same as for sodium carbonate, although a much larger quantity of potassium carbonate than carbonate of soda is obtained from burned plant ashes. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. The seed-lac is bleached by boiling with sodium or potassium carbonate, alum, or borax, and then, if it is not pale enough, is further bleached by exposure to sunlight. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association This gave her a solution of pearl ash or potassium carbonate whose concentration she tested with an egg as a hydrometer. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries When animal matter containing nitrogen is heated with iron and potassium carbonate, complicated changes occur which result in the formation of a substance commonly called yellow prussiate of potash, which has the formula K4FeC6N6. An Elementary Study of Chemistry Potassium iodid, alkaline agents such as ammonium carbonate and potassium carbonate, have been administered. Lameness of the Horse Veterinary Practitioners' Series, No. 1 The hydroxides of these metals are usually used, except in the so called carbonate saponification of free fatty acids in which case sodium and potassium carbonate are used. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. These are potassium carbonate, chloride, and sulphate, with similar sodium salts, and these vary in different samples of cotton, and possibly influence its properties to some extent. Scientific American Supplement, No. 620, November 19,1887 Finely ground zircon is quickly rendered soluble if fused with a mixture of potassium borofluoride and potassium carbonate. Scientific American Supplement, No. 441, June 14, 1884. What weight of carnallite would be necessary in the preparation of 1 ton of potassium carbonate? An Elementary Study of Chemistry Here they are converted into potassium carbonate or some other carbonate. The Chemistry of Food and Nutrition As the sample contained a considerable quantity of potassium carbonate, in which the resin is soluble, it was thought that by neutralizing this it might render the resin more easy of extraction. Scientific American Supplement, No. 531, March 6, 1886 Also solid potassium carbonate may be used instead of calcium chloride for drying the gas. Scientific American Supplement, No. 497, July 11, 1885 It corresponds approximately to the weight of the carbonic anhydride present in the potassium carbonate. Scientific American Supplement, No. 441, June 14, 1884. The following ointment is commonly recommended: potassium sulfide ten parts, potassium carbonate two parts, and lard three hundred parts. Common Diseases of Farm Animals The liquid is filtered and evaporated, precipitated by an excess of a strong solution of potassium carbonate, and the alkaloid extracted by chloroform. Scientific American Supplement, No. 324, March 18, 1882 The ash weighed 52 per cent., the soluble part of which, 18.5, was mostly potassium carbonate, with some chlorides and sulphates; the insoluble, mostly chalk with iron and alumina. Scientific American Supplement, No. 531, March 6, 1886 He leaches the soil removed, to recover the calcium nitrate, and then pours the leachings through plant ashes containing potassium carbonate, for the purpose of transforming the calcium nitrate into the potassium nitrate or saltpeter. Farmers of Forty Centuries; Or, Permanent Agriculture in China, Korea, and Japan Potash, that is, crude potassium carbonate, useful in making soap and in the manufacture of glass, was made by leaching wood ashes and boiling down the lye. The Age of Invention : a chronicle of mechanical conquest The heavier liquid flows through a tower of anhydrous potassium carbonate, and then returns to the reaction flask. Organic Syntheses The bottom of the tower is connected with a small separatory funnel through which any potassium carbonate solution, which flows from the solid in the tower, may be withdrawn from time to time. Organic Syntheses Twenty parts of the ash were soluble and largely potassium carbonate, the insoluble being iron for the most part. Scientific American Supplement, No. 531, March 6, 1886 This fraction, which consists principally of alcohol, with a little carbon tetrachloride and moisture, is dried with potassium carbonate and returned to the reaction mixture. Organic Syntheses The side-arm of the separator may be made with two rubber connections,— one above and one below the tube leading to the potassium carbonate tube. Organic Syntheses |
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