| 单词 | sodium carbonate |
| 例句 | It was they who discovered the beneficial effects of "flux", in their case a mineral fertiliser called natron, a naturally occurring form of sodium carbonate. Mark Miodownik: an obsession with materials 2013-05-24T15:53:00Z He covers most every disgusting stain imaginable and suggests ways to get rid of them, MacGyver-like, using bleach alternative, sodium carbonate, rubbing alcohol and white vinegar. Review | You know what else you’re doing wrong? Laundry. Don’t worry, a new book offers hope. 2021-03-25T04:00:00Z For example, nickel carbonate can be prepared from solutions of nickel nitrate and sodium carbonate according to the following net ionic equation: Chemistry 2019-02-14T00:00:00Z Images from NASA's Dawn spacecraft, which dipped to less than 35 kilometers above Ceres’s surface on its 2018 mission, reveal the areas are deposits of mostly sodium carbonate. Daily briefing: Mysterious mismatch between coronavirus infections and serious disease in Africa 2020-08-12T04:00:00Z On Earth, sodium carbonate is often known as washing soda or soda ash. NASA’s Dawn Mission to the Asteroid Belt Says Good Night 2018-11-01T04:00:00Z Each batch contains simple, naturally occurring ingredients, such as sodium carbonate, coconut oil, sodium tetra-borate, sodium hydrogen carbonate and optional essential oils such as lemongrass and eucalyptus, to leave clothes soft, clean and smelling good. Eco-friendly laundry detergent cleans without chemicals | Produced by Advertising Publications 2018-09-29T04:00:00Z The sodium carbonate carries an electric charge to the water’s surface. The Scuba Diving Flies of California’s Mono Lake 2017-11-21T05:00:00Z Consider, for example, mixing aqueous solutions of the soluble compounds sodium carbonate and calcium nitrate. Chemistry 2019-02-14T00:00:00Z Water diversions are shrinking the lake, raising sodium carbonate concentrations to dangerously high levels, even for the alkali fly. This fly survives a deadly lake by encasing itself in a bubble. Here’s how it makes it 2017-11-20T05:00:00Z He’s something of a health nut who avoids chemicals, even such harmless ones as sodium carbonate. Reren Lamen review: A fresh source for noodles in Chinatown 2016-08-04T04:00:00Z Natural Red #4 may sound harmless, but the food colouring – also known as carmine – is made by boiling female cochineal insect shells in ammonia or a sodium carbonate solution. 10 gross ingredients you didn't know were in your food 2013-05-13T11:11:46Z In some methods of wool dyeing, a wash of soda was first given, so that it is barely possible that this substance was sodium carbonate. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The two carbonates used commercially in the largest quantities are sodium carbonate and calcium carbonate. Chemistry 2019-02-14T00:00:00Z The bullion left in the retorts is then melted in black-lead crucibles, with the addition of small quantities of suitable fluxes, e.g. nitre, sodium carbonate, &c. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z The Laminaria is first extracted with water, and the residue with sodium carbonate; the filtrate is acidified with hydrochloric acid and the precipitated alginic acid washed and bleached. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z The precipitate is dissolved in hydrochloric acid and foreign metals are removed by sulphuretted hydrogen; the residual liquid being then fractionally precipitated by sodium carbonate, which throws out the gallium before the zinc. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z This is effected by heating a mixture of the fuel with lime and sodium carbonate in a porcelain dish to redness in a muffle until all the carbonaceous matter has been burnt off. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Washing soda is the common name for a hydrate of sodium carbonate containing 10 water molecules; the systematic name is sodium carbonate decahydrate. Chemistry 2019-02-14T00:00:00Z The precipitate is collected in a filter-press, and then roasted in muffle furnaces with nitre, borax and sodium carbonate. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z The caustic soda is then exposed to the power plant's exhaust, where it combines with carbon dioxide to create, over two steps, sodium carbonate and then sodium bicarbonate. Making The Best Out Of Carbon Capture 2010-06-11T19:00:00Z The residue in the filter is ignited and fused with a little sodium carbonate and nitrate, or with sodium peroxide. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" Reverberatory furnaces play an important part in the manufacture of sodium carbonate; descriptions and illustrations are given in the article Alkali Manufacture. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Dissolve the sodium carbonate and borax in water and when dissolved add the glycerine and stir. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. When potassium or sodium carbonate is added, a blue dye known as litmus, much used as an “indicator,” is produced. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 "Aram, Eugene" to "Arcueil" During the Napoleonic wars the price of barilla rose to such a height that Napoleon offered a reward for the discovery of a process for the manufacture of sodium carbonate. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis Antimony compounds when heated on charcoal with sodium carbonate in the reducing flame give brittle beads of metallic antimony, and a white incrustation of the oxide. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" When the conversion has reached the proper point the pressure is removed, the hot liquid is neutralized with sodium carbonate, filtered and evaporated to a thick liquid. Candy-Making Revolutionized Confectionery from Vegetables After extracting the glycerine the soap is slowly introduced into a boiling solution of sodium carbonate or soda ash and boiled until the soda has replaced the lime. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Consider, for instance, a fragment of calcium chloride immersed in a solution of sodium carbonate. The Mechanism of Life A chemist, Leblanc, in 1791 invented a new process by which sodium carbonate could be obtained from common salt, and this entirely superseded barilla. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis An alternative method is to dissolve sodium carbonate in lead-lined steam-heated pans, and add the boric acid gradually; the solution then being concentrated until the borax crystallizes. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2 "Bohemia" to "Borgia, Francis" Occasionally salicylic acid and sodium carbonate are used. Dietetics for Nurses Large crystals of sal soda containing but 37% sodium carbonate are formed. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. It is also readily soluble in solutions of the caustic alkalis, slightly soluble in aqueous ammonia solution, and almost insoluble in sodium carbonate solution. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Plants are still grown in Southern France and Spain to obtain soda and other substances from the ash; but almost all the sodium carbonate of the present day is manufactured chemically. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis Certain substances are insoluble in all these reagents, and other methods, such as the fusion with sodium carbonate and potassium nitrate, and subsequent treatment with an acid, must be employed. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" As soon as the solution of arsenic is complete, dilute to about 4 gallons, add the sodium carbonate, and stir until dissolved. Special Report on Diseases of Cattle 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 chemicals added were borax, boracic acid, salicilic acid, sodium carbonate, and other similar disinfectants. Rural Hygiene Baril�la, is the commercial name for impure sodium carbonate imported from Spain and the Levant. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis Thus a normal solution of sodium carbonate contains 53 grammes per litre, of sodium hydrate 40 grammes, of hydrochloric acid 36.5 grammes, and so on. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Pipette off the supernatant fluid and fill the tubes with sterile 1 per cent. sodium carbonate solution previously warmed slightly; stopper the tubes and shake vigourously for a few minutes. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Since soda ash or sodium carbonate is cheaper than caustic soda and readily unites with a fatty acid, it is used as the alkali in the carbonate saponification. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. By the frequent use of acid or alkaline lotions, such as dilute acetic acid and vinegar, or solutions of sodium carbonate and borax. Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine The heat from the ship boiled the water which undoubtedly contained sodium carbonate and calcium hydroxide; presto, and the air was filled with clouds of sodium hydroxide. No Moving Parts Pure sodium carbonate is prepared by igniting the bicarbonate, and exactly 53 grammes are dissolved in water, forming a strictly normal solution. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" But before it is retoned the print must be thoroughly washed, as the presence of sodium carbonate does not permit the toning solution to do its work. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements It is manufactured by treating sodium carbonate in an iron vessel with calcium hydroxide or slaked lime, or by electrolysis of common salt. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. But it can be, however, developed in a few seconds by immersion in a cold or slightly warm solution of sodium carbonate, 1:25 of water. Photographic Reproduction Processes Solution No. 3: Water, 32 ounces; sodium carbonate, from 4 to 6 ounces. Practical Mechanics for Boys In the one case, after saponification with sulphuric acid, the liberated fatty acids are washed with water and treated with an oxide, carbonate, or other acid-fixing body, e.g., sodium carbonate, prior to distillation. The Handbook of Soap Manufacture The kind of alkali determines the character of the water; in some cases it is sodium carbonate, which is particularly objectionable. Human Foods and Their Nutritive Value These consist of sodium carbonate, sodium chloride or common salt and sometimes lime. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Account for the fact that solutions of sodium carbonate and potassium carbonate are alkaline. An Elementary Study of Chemistry Cadmium is estimated quantitatively by conversion into the oxide, being precipitated from boiling solutions by the addition of sodium carbonate, the carbonate thus formed passing into the oxide on ignition. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" To be converted by the sodium carbonate into a form of soap which is soluble in water. Physiology and Hygiene for Secondary Schools Further, if phosphates are present, the precipitate will contain phosphoric oxide; it may be freed from this by fusion with sodium carbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. The next stage of the Leblanc process is the manufacture of "black ash," or crude sodium carbonate. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association Account for the fact that a solution of sodium carbonate, when added to a solution of a ferric salt, precipitates an hydroxide and not a carbonate. An Elementary Study of Chemistry It is then forced into the solution of sodium carbonate in the absorption tower, 65 ft. high by 6 ft. diameter, filled with the liquor. Scientific American Supplement, No. 611, September 17, 1887 The addition of soda, or sodium carbonate to the water will usually produce the desired effect. General Science The quantity of insoluble silicates is determined by dissolving out the separated silica with a strong boiling solution of sodium carbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. The resinous mass thus produced is boiled with water, the resulting picric acid is converted into a sodium salt by a solution of sodium carbonate, which throws down sodium picrate in crystals. Nitro-Explosives: A Practical Treatise 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 As the compounds of fatty acids with ammoniacal blood gelatine and sodium carbonate, the ingredients of the bile also, develop into a peculiar soap. Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration Next to it come the so-called carbonates: first, sodium carbonate, which is already familiar to us as washing soda; and second, sodium bicarbonate, which is an ingredient of baking powders. General Science In order to determine its exact strength, weigh up 3 grams of recently ignited pure sodium carbonate or of the ignited bicarbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. The solution, together with the washings, are titrated with N/4 sodium carbonate, using litmus as indicator. Nitro-Explosives: A Practical Treatise In former times sodium carbonate was made by burning seaweeds and extracting the carbonate from their ash. An Elementary Study of Chemistry The use of pepsin for this purpose cannot serve nature's purpose, as it contains neither sodium carbonate nor sodium sulphate. Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration An enormous quantity of sodium carbonate, or soda, as it is usually called, is needed in the manufacture of glass, soap, bleaching powders, and other commercial products. General Science It should then be checked by another titration with pure sodium carbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. The solution is then nearly neutralised with sodium carbonate, excess of bi-carbonate added, and after the addition of some starch solution titrated with N/20 iodine solution. Nitro-Explosives: A Practical Treatise This salt, commonly called bicarbonate of soda, or baking soda, is made by the Solvay process, as explained above, or by passing carbon dioxide into strong solutions of sodium carbonate: Na2CO3 + H2O + CO2 = 2NaHCO3. An Elementary Study of Chemistry Our blood must be given a fresh and sufficient supply of sodium carbonate and sodium sulphate via our food, if it is to produce normal bile and supply the requisites of normal nutrition. Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration The result of the experiment showed that only one-half the quantity of nitric acid was formed in the simple urine solution as in similar solutions containing calcium and sodium carbonate. Scientific American Supplement, No. 470, January 3, 1885 Read off the number of c.c. used, and calculate to how much sodium carbonate 100 c.c. of the "acid" are equivalent. A Text-book of Assaying: For the Use of Those Connected with Mines. Sodium carbonate added to an unstable nitro-cellulose diminishes the rate of decomposition, but if sodium carbonate be intimately mixed with a stable nitro-cellulose the rate of decomposition will be increased. Nitro-Explosives: A Practical Treatise Such waters are softened on a commercial scale by the addition of the proper quantities of calcium hydroxide and sodium carbonate. An Elementary Study of Chemistry For example, a definite weight of pure sodium carbonate may be dissolved in water, and the volume of a solution of hydrochloric acid necessary to exactly neutralize the carbonate accurately determined. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes To keep back any free acetic acid which might be swept over by the current of gas, there is introduced after the washing apparatus another washing bottle with sodium carbonate. Scientific American Supplement, No. 497, July 11, 1885 It may be separated from zirconia by the action of sodium carbonate, which precipitates both; but when concentrated, redissolves the zirconia. A Text-book of Assaying: For the Use of Those Connected with Mines. By soaking foods, they are deprived of much of their soda: The two sodium salts that are very abundant are sodium chloride, or common salt, and sodium carbonate, generally called soda. Maintaining Health Formerly Health and Efficiency The quantity of calcium hydroxide and sodium carbonate required is calculated from a chemical analysis of the water. An Elementary Study of Chemistry The difference represents the volume of acid used to react with the sodium carbonate. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Now the process seems to be known only in that particular form in which granulated carbide is treated with crystallised sodium carbonate, i.e., common washing soda. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power Cautiously add sodium carbonate to the hot, moderately dilute solution, until the liquid is distinctly alkaline, and boil. A Text-book of Assaying: For the Use of Those Connected with Mines. All those condensation products which are easily or partly soluble in alcohol dissolve in caustic soda, sodium carbonate, in some cases also in borax and sodium sulphite. Synthetic Tannins On dissolving the cooled mixture in water the sodium sulphate formed in the reaction, together with any excess of sodium carbonate which may be present, dissolves. An Elementary Study of Chemistry At the end of the half-hour remove the thermometer and transfer the porcelain crucible, which now contains sodium carbonate, to a desiccator. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Half fill three test tubes, A, B, C, with one-per-cent solution of sodium carbonate, and add 5 drops of liquor pancreaticus, or a few grains of Fairchild's extract of pancreas, in each. A Practical Physiology Insoluble compounds are "dissolved in nitric acid at once, or, if necessary, first fused with sodium carbonate." A Text-book of Assaying: For the Use of Those Connected with Mines. But the use of sodium carbonate and other things which I have discovered in other samples disengages carbon dioxide at the temperature of baking and cooking. The Treasure-Train After a short time the sodium carbonate is added to precipitate the other soluble salts of calcium and magnesium, together with any excess of calcium hydroxide which may have been added. An Elementary Study of Chemistry PROCEDURE.—Clean carefully the outside of a weighing-tube, or weighing-bottle, containing the pure sodium carbonate, taking care to handle it as little as possible after wiping. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Pour a little cod-liver oil into a test tube; add a few drops of a dilute solution of sodium carbonate. A Practical Physiology 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. "This seems to be almost plain sodium carbonate," he replied, mechanically. The Treasure-Train What weight of sodium carbonate crystals will 1 kg. of the anhydrous salt yield? An Elementary Study of Chemistry Repeat the procedure, using the second portion of sodium carbonate. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Examine white sand, calcium carbonate, sodium carbonate, smalt; bottle, window, Bohemian and flint glass. An Introduction to Chemical Science Solution is effected by boiling with aqua regia, or by fusing with nitre and sodium carbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. In purifying the aldehyde, sodium carbonate may be used in place of sodium hydroxide for precipitation, but it causes much foaming. Organic Syntheses The salt is extensively used in the manufacture of sodium carbonate and glass. An Elementary Study of Chemistry Divide the weight of sodium carbonate by this volume in cubic centimeters, thus obtaining the weight of sodium carbonate equivalent to each cubic centimeter of the acid. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Mix each in the crucible with five to six times its weight of anhydrous sodium carbonate. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes In the exceptional cases it is got into solution by treating with a boiling solution of sodium carbonate; the nitrate will contain it as an alkaline nitrate. A Text-book of Assaying: For the Use of Those Connected with Mines. This is washed with a little 10 per cent sodium carbonate solution to remove small amounts of phenylacetic acid which may have been formed, and then distilled in vacuo. Organic Syntheses Thus hydrochloric acid, a by-product in the Le Blanc process, is valuable enough to make the process pay, even though sodium carbonate can be made cheaper in other ways. An Elementary Study of Chemistry Mix the ash with five times its weight of sodium carbonate and heat to fusion; cool, and disintegrate the fused mass with boiling water in the crucible. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes In standardizing a hydrochloric acid solution it is found that 47.26 cc. of hydrochloric acid are exactly equivalent to 1.216 grams of pure sodium carbonate, using methyl orange as an indicator. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The ignited residue is mixed with 6 or 7 grams of anhydrous sodium carbonate. A Text-book of Assaying: For the Use of Those Connected with Mines. In washing the layer of ethyl phenylacetate with sodium carbonate it is sometimes advisable to add a certain amount of sodium chloride so that the ester will separate more readily. Organic Syntheses On digesting this mass with water the sodium carbonate passes into solution. An Elementary Study of Chemistry The fluxes in most common use are sodium carbonate and sodium or potassium acid sulphate. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes It is desired to dilute a solution of sulphuric acid of which 1 cc. is equivalent to 0.1027 gram of pure sodium carbonate to make it exactly 1.250 normal. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes For the determination, solution is effected by fusing with nitre and sodium carbonate, dissolving out the tellurate of potash with water, and boiling with hydrochloric acid. A Text-book of Assaying: For the Use of Those Connected with Mines. The product is now cooled, placed in a 4-l. beaker, and treated with solid sodium carbonate until just alkaline to litmus. Organic Syntheses A sample of sodium carbonate containing sodium hydroxide weighs 1.179 grams. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Fusions with sodium carbonate can be made only in platinum, since porcelain or silica crucibles are attacked by this reagent. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes This is fused with 4 grams of sodium carbonate. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Finely powdered sodium carbonate is then added in 50-g. portions until the mixture is strongly alkaline. Organic Syntheses Water is added from time to time, to facilitate the reaction with the sodium carbonate and to prevent the separation of salt; about 500 cc. are required. Organic Syntheses |
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