| 单词 | aqua regia |
| 例句 | But Aureliano spent the money on muriatic add to prepare some aqua regia and he beautified the keys by plating them with gold. One Hundred Years of Solitude 1967-05-30T00:00:00Z A simplified equation to represent the action of aqua regia on gold is: Chemistry 2019-02-14T00:00:00Z The making of the mineral acids—certainly nitric and aqua regia, and perhaps hydrochloric and sulphuric—are here first described. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Auric chloride, or gold trichloride, AuCl3, is a dark ruby-red or reddish-brown, crystalline, deliquescent powder obtained by dissolving the metal in aqua regia. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z With aqua regia it assumes the form of a gelatinous substance used by dyers to heighten the colour of some red tinctures, so as to produce a bright scarlet in dying wool. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The metallic ingot is attacked with hot aqua regia till no iron is left undissolved. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z These are directions for the manufacture of aqua regia, Spanish gold, and something which Archiater called Apples of Sodom. In the Days of the Guild 2011-08-03T02:00:12.687Z It will appear later, from the method of manufacture, that hydrochloric, nitric, and sulphuric acids and aqua regia were more or less all produced and all included in this term. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z This salt is prepared by precipitating a solution of gold in aqua regia by ammonia, and then introducing the well-washed precipitate into a boiling solution of potassium cyanide. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z Cobalt, dissolved in aqua regia, makes an excellent sympathetic ink, appearing green when held to the fire, and disappearing when cold, unless it has been heated too much, when it burns the paper. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z It readily dissolves in nitric acid, aqua regia and hot sulphuric acid, but tardily in hot hydrochloric acid. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" Even aqua regia and hydrofluoric acid couldn't touch it. Tillie The terms aqua fortis and aqua regia had come into use prior to Agricola, but he does not use them; the Alchemists used various terms, often aqua dissolvia. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Or the alloy is dissolved in aqua regia, the solution filtered from the insoluble silver chloride, and the gold precipitated by ferrous chloride. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z It is soluble in the vitriolic or marine acids, and reduced to a yellow calx by nitrous acid or aqua regia. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Put as much gold in as small a quantity of aqua regia as will dissolve it, and dilute it with two or three times the quantity of distilled water. Endless Amusement A Collection of Nearly 400 Entertaining Experiments It burns on heating in air; and is scarcely attacked by hydrochloric or nitric acids, or by aqua regia; it is soluble in warm concentrated sulphuric acid. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" The third might yield nitric, and the fourth aqua regia. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z He is the first to describe nitric acid and aqua regia. History of the Intellectual Development of Europe, Volume I (of 2) Revised Edition This acid was called aqua regia, from its most celebrated property of dissolving gold, called king of metals by the alchymists. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries Next dissolve, in a separate vessel, fine pewter in aqua regia, and when it is well impregnated, add an equal quantity of distilled water. Endless Amusement A Collection of Nearly 400 Entertaining Experiments For this purpose I have used bismuth and nickel, with spirit of nitre only, and regulus of antimony and platina, with aqua regia. Experiments and Observations on Different Kinds of Air Manufacture of nitric acid and aqua regia Prior to 1400 A.D. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Djafar discovers nitric acid and aqua regia, To one of these chemists, Djafar, our attention may for a moment be drawn. History of the Intellectual Development of Europe, Volume I (of 2) Revised Edition Would a solution of gold in aqua regia be worth trying? Zoonomia, Vol. II Or, the Laws of Organic Life Sixth Experiment.—I precipitated with alkali of tartar a solution of gold which was made with aqua regia; I reduced in the foregoing manner the washed and dried calx of gold. Discovery of Oxygen, Part 2 One hundred grams of platinum are dissolved in aqua regia and the solution is dried on the sand bath, without, however, producing decomposition. On Laboratory Arts The addition of sal-ammoniac would make aqua regia; Geber used this solvent water—probably without being made "more acute"—to dissolve silver, and he crystallized out silver nitrate. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z But music is the true aqua regia; it dissolves all into its own essence. The Atlantic Monthly, Volume 2, No. 14, December 1858 The "platinum chloride" of the laboratory is made by dissolving platinum in aqua regia. An Elementary Study of Chemistry Fuming hydrochloric acid and aqua regia attack thorium readily, but the alkalies are without action. Scientific American Supplement, No. 365, December 30, 1882 The spent aqua regia may be put into a bottle. On Laboratory Arts Determination of Copper in Tin.—Weigh up 1 gram of the sample, transfer to an evaporating dish, and cover with 30 c.c. of aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. It is insusceptible of rust, as gold and silver are, none of the acids affecting it, excepting the aqua regia. Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 1 What is the meaning of the phrase aqua regia? An Elementary Study of Chemistry The deposit, which is rather dark colored, can be dissolved in aqua regia and confirmed for by the Cassius' purple test. Scientific American Supplement, No. 810, July 11, 1891 “Do you recognise those scratches?” he said, with a smile, pointing out a rough design bitten into the silver by the application of aqua regia and beeswax. The Stowmarket Mystery Or, A Legacy of Hate Alloys containing tungsten leave tungstic acid after treatment with nitric acid or aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. The most exact method of demonstrating the presence of lead consists in treating the alloy—so-called tin—with aqua regia containing relatively little nitric acid. Scientific American Supplement, No. 385, May 19, 1883 What is formed when a metal dissolves in each of the following? nitric acid; dilute sulphuric acid; concentrated sulphuric acid; hydrochloric acid; aqua regia. An Elementary Study of Chemistry Consequently, since phosphoric acid results from the phosphine in crude acetylene when the gas is passed through aqua regia, silica may be found on subsequently evaporating the latter. 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 Zaffre digested in aqua regia, and diluted with four times its weight of water, is sometimes employed; a green tint results. Short Stories Old and New Another method of separating and determining the phosphorus is as follows:—Take 1 gram of the substance and add to it 15 c.c. of hot aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. This he dissolved in the aqua regia, formed by the combination of the two acids, and applied the usual chemical tests. The Pony Rider Boys in the Rockies Or, the Secret of the Lost Claim The mixture is known as aqua regia and is commonly prepared by adding one volume of nitric acid to three volumes of hydrochloric acid. An Elementary Study of Chemistry A mode of diminishing the gold coin, practiced chiefly by the Jews, who corrode it with aqua regia. 1811 Dictionary of the Vulgar Tongue PtCl4 is made by dissolving Pt in aqua regia, and evaporating the liquid. An Introduction to Chemical Science Thirteen and a half grams of the coarse material were dissolved in aqua regia, and diluted with water to 1 litre. A Text-book of Assaying: For the Use of Those Connected with Mines. It occurs in bright metallic scales, which do not alloy with lead, and are insoluble in aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. No mercury-containing minerals are insoluble in acids; but cinnabar requires aqua regia for solution. A Text-book of Assaying: For the Use of Those Connected with Mines. This may be got rid of by boiling in aqua regia, and dissolving out the tungstic acid which has been liberated by means of ammonia. A Text-book of Assaying: For the Use of Those Connected with Mines. No other acid except nitro-hydrochloric will dissolve Au or Pt; hence the ancients called it aqua regia, or king of liquids. An Introduction to Chemical Science It is used with hydrochloric acid as a substitute for aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. On treatment with hydrochloric acid or aqua regia they are decomposed; the yellow tungstic acid separates and remains insoluble. A Text-book of Assaying: For the Use of Those Connected with Mines. Transfer to a flask, and cover with 10 c.c. of the solution of the metallic portion and 10 c.c. of aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. The percentage of arsenic is better determined as follows:—Weigh up 1 gram of the substance, dissolve in aqua regia, dilute, and pass sulphuretted hydrogen. A Text-book of Assaying: For the Use of Those Connected with Mines. Generally it answers the same purpose as aqua regia, and is employed where the addition of nitric acid to a solution has to be specially avoided. A Text-book of Assaying: For the Use of Those Connected with Mines. Gold is insoluble in hydrochloric or nitric acid, but is dissolved by aqua regia or by solutions of iodine, bromine, or chlorine. A Text-book of Assaying: For the Use of Those Connected with Mines. When solutions in aqua regia are evaporated, chlorides are left. A Text-book of Assaying: For the Use of Those Connected with Mines. It is dissolved in hydrochloric acid or aqua regia, and the solution evaporated to dryness. A Text-book of Assaying: For the Use of Those Connected with Mines. When the purer metal is required, gold should be dissolved in aqua regia, the solution evaporated to a paste, diluted, allowed to stand, and filtered. A Text-book of Assaying: For the Use of Those Connected with Mines. They are soluble in nitric acid or aqua regia, and, provided the solution is sufficiently acid, they remain dissolved. A Text-book of Assaying: For the Use of Those Connected with Mines. The gold may contain an alloy of osmium and iridium; if so, it should be weighed and treated with aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. Some silicates, but not many, are completely decomposed by boiling with hydrochloric acid or aqua regia; and others are partly so, they yield a gelatinous precipitate of silica which greatly interferes with the filtering. A Text-book of Assaying: For the Use of Those Connected with Mines. 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. The native sulphides, when acted on with hydrochloric acid, give off sulphuretted hydrogen; with nitric acid or aqua regia, sulphates are formed, and more or less sulphur separated. A Text-book of Assaying: For the Use of Those Connected with Mines. Solution.—The solution is effected by boiling with nitric acid or aqua regia, or by fusing with nitre. A Text-book of Assaying: For the Use of Those Connected with Mines. In alloys it may be found by dissolving them in nitric acid or in aqua regia, evaporating with hydrochloric acid, and treating the filtrate with ammonic chloride and alcohol. A Text-book of Assaying: For the Use of Those Connected with Mines. The natural carbon compounds, although, speaking generally, insoluble in hydrochloric or nitric acids, are more or less attacked by aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. |
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