| 单词 | nitrous acid |
| 例句 | The pH provided is a logarithmic measure of the hydronium ion concentration resulting from the acid ionization of the nitrous acid, and so it represents an “equilibrium” value for the ICE table: Chemistry 2019-02-14T00:00:00Z Other nitrogen oxides include nitrous acid and nitric acid. Environmental Biology 2018-09-06T00:00:00Z “Usually one thinks about pollutants such as nitrogen dioxide and nitrous acid as being lost from the atmosphere onto surfaces.” Sunlight Activates Smog-Causing Chemicals in City Grime 2015-08-20T04:00:00Z When intense, as they are at present, they produce ozone in great quantity, and also, as Professor Crookes has pointed out, nitrous acid. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Nitric and nitrous acids are also produced by electric discharges through the atmosphere, and these are found eventually as nitrates in soils, &c. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z The addition of sodium nitrite to meat products is controversial because nitrous acid reacts with certain organic compounds to form a class of compounds known as nitrosamines. Chemistry 2019-02-14T00:00:00Z It is less capable of concentration than the vitriolic or nitrous acids, perhaps from a more intimate union of phlogiston with it. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z There was still, however, the production of the volatile alkali and of nitrous acid to be accounted for. Scientific Culture, and Other Essays Second Edition; with Additions 2011-09-17T02:00:31.747Z By the action of nitrous acid at low temperatures on aromatic amines, e.g. aniline, C6H5NH2, diazo compounds are produced. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z These substances are formed from the aromatic amines by treatment with nitrous acid at low temperatures. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z Which of the following structures would we expect for nitrous acid? Chemistry 2019-02-14T00:00:00Z When the gold is mixed with silver, three parts more of silver are put to it, and then the silver is dissolved by nitrous acid, leaving the gold pure. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Cruickshanks supposed that the acid was nitrous acid, and the alkali ammonia. Scientific Culture, and Other Essays Second Edition; with Additions 2011-09-17T02:00:31.747Z It is formed by the action of a solution of mercurous nitrate, containing some nitrous acid, on alcohol. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z The necessary diazo compound is prepared by allowing a solution containing nitrous acid to act upon a solution of a primary aromatic amine. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Unvented gas appliances are the main source of nitrous acid indoors, and vehicle engines emit it too. 2010-02-08T22:48:00Z Vitriolic acid, even concentrated and boiling, has but little effect upon bismuth; but the nitrous acid acts upon it with the greatest rapidity and violence, producing much nitrous air, mixed with phlogisticated nitrous vapour. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z This corresponds to N + 1.75 O, the oxygen being decidedly in excess of the proportion required to form nitrous acid. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" This is made evident to the eye by the bubbles which collect in the lines, and to the nose by the fumes of nitrous acid which the bath exhales. A Treatise on Etching By the action of nitrous acid the blue is converted into a green known as “methylene green.” Coal and What We Get from It "What we see in this study is that the reactions of residual nicotine with nitrous acid at surface interfaces are a potential cancer hazard, and these results may be just the tip of the iceberg." 2010-02-08T22:48:00Z Nitrous air is procured by dissolving most of the metals, especially iron, mercury, and copper, in the nitrous acid; but that from mercury seems to be the purest. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The corrosive nitrous acid acted inefficiently on the metals which he employed, and so his etchings fall short of excellence. Dürer Artist-Biographies Dissolve green vitriol and a little nitrous acid in common water. Endless Amusement A Collection of Nearly 400 Entertaining Experiments And it must also be remembered that the introduction of these azo-colours has necessitated the manufacture on a large scale of sodium nitrite as a source of nitrous acid. Coal and What We Get from It The nitrous acid passes over in form of red vapours surcharged with nitrous gas, or, in other words, not saturated with oxygen. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries Nitrous air is completely decomposed by a mixture of about half its bulk of dephlogisticated air, and the produce is nitrous acid. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z This is also an erroneous assumption; the electric spark, in passing through the atmosphere, combines its constituents, and forms nitrous acid. Blackwood's Edinburgh Magazine - Volume 57, No. 352, February 1845 I do not know any inquiry more promising than the investigation of the properties of nitre, the nitrous acid, and nitrous air. Experiments and Observations on Different Kinds of Air In fact they obtained rosolic acid from magenta by the action of nitrous acid on the latter. Coal and What We Get from It Intermediate quantities of oxygen between these two extremes of oxygenation produce different species of nitrous acid, or, in other words, nitric acid less or more impregnated with nitrous gas. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries And as nitrous acid is likewise formed by the union of inflammable and dephlogisticated air, one principal ingredient in nitrous air must be common to it and inflammable air, or phlogiston. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Tanned leather is best cleaned with nitrous acid and salts of lemon diluted with water, and afterwards mixed with skimmed milk. The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches, Adapted to the Use of Private Families This species of factitious air is obtained from all the metals except zinc, by means of the nitrous acid; and Dr. Priestley informs me, that as a sweetener and antiseptic it far surpasses fixed air. Experiments and Observations on Different Kinds of Air The analogy with nitrous acid will therefore be sufficiently understood—the residue of this acid is the nitroso-group, and compounds containing this group are nitroso-derivatives. Coal and What We Get from It In this state, by the application of a gentle heat, it gives out nitrous gas; and we term it, in this degree of oxygenation, nitrous acid. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries The nitrous acid may be exhibited in the form of air, as well as the vitriolic, the marine, and the fluor acids. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Letters were fumigated by vinegar, or nitrous acid, before they were allowed to go out of the ship. A Journal of a Young Man of Massachusetts, 2nd ed. Late A Surgeon On Board An American Privateer, Who Was Captured At Sea By The British, In May, Eighteen Hundred And Thirteen, And Was Confined First, At Melville Island, Halifax, Then At Chatham, In England ... And Last, At Dartmoor Prison. Interspersed With Observations, Anecdotes And Remarks, Tending To Illustrate The Moral And Political Characters Of Three Nations. To Which Is Added, A Correct Engraving Of Dartmoor Prison, Representing The Massacre Of American Prisoners, Written By Himself. Of the other constituents of the atmosphere, the combined forms of nitrogen—viz., ammonia, nitric, and nitrous acids—are the most important. Manures and the principles of manuring The atmosphere which surrounds us, is composed of twenty-seven parts of oxygen gas and seventy-three of azote or nitrogen gas, which are simply diffused together, but which, when combined, become nitrous acid. The Temple of Nature; or, the Origin of Society A Poem, with Philosophical Notes It is from the disengagement of oxygen that the nitric acid of the neutral salt is in this operation converted into nitrous acid. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries This nitrous acid air is that red vapour, which is produced by the rapid solution of bismuth, and some other metals in the nitrous acid. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Into a glass cylinder, with its ends stopped by discs of plate-glass, a small quantity of nitrous acid gas is introduced; the presence of the gas being indicated by its rich brown colour. Fragments of science, V. 1-2 Nitrogen occurs in the soil as organic nitrogen, nitric acid, nitrous acid, and ammonia. Manures and the principles of manuring One of the most important properties of this group of acids is the formation of isomeric acids of higher melting point on treatment with nitrous acid, generally termed the elaidin reaction. The Handbook of Soap Manufacture The cheapest and most convenient method of obtaining nitrous acid for diazotising is by the action of a mineral acid, preferably hydrochloric acid, upon nitrite of soda. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student The nitrous acid is formed by the union of the purest inflammable air, or the purest nitrous air, with dephlogisticated air. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The brown fumes of nitrous acid were seen mingling with the cloud within the experimental tube. Fragments of science, V. 1-2 The base, with which the nitrous acid combines as it is formed, being at that stage entirely used up, nitrification is no longer possible. Manures and the principles of manuring They are unaffected by nitrous acid, and their lead salts are soluble in ether. The Handbook of Soap Manufacture By the action of nitrous acid upon the salts of the primary organic amines the so-called diazo compounds are formed. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student But it is usually procured from nitre by means of the vitriolic acid, which, seizing its base, expels the nitrous acid in a liquid form. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The French School maintained "that hydrogenous and oxygenous airs, incorporated by drawing through them the electrical spark turn to water," but Priestley contended that "they combine into smoking nitrous acid." Priestley in America 1794-1804 Monsieur Bertholet, by dissolving silver in the nitrous acid, precipitating it with lime-water, and drying the precipitate on ammoniac, has discovered a powder, which fulminates most powerfully, on coming into contact with any substance whatever. Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 2 He produces nitrous acid by treating iron filings in a glass bottle with nitric acid. The Art of Perfumery And Methods of Obtaining the Odors of Plants It is coagulable by heat, by nitrous acid, and by spirit of wine, like milk, serum of blood, and other fluids, which daily experience evinces to be nutritious. Zoonomia, Vol. I Or, the Laws of Organic Life If the nitrous acid be made to pass through a red-hot earthen tube, it will be decomposed, and the greatest part of it be converted into dephlogisticated air. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z For instance, the red nitrous acid water of the nitrates will indicate the decomposition of the salt, especially if it be the nitrate of a metallic oxide. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations He adds ammonium sulphate or ammonium nitrate to the mixed acids during the operation of nitrating, which he claims destroys the nitrous acid formed according to the equation— Nitro-Explosives: A Practical Treatise The vapor of nitrous acid is conducted through a glass tube into water, upon which the oil to be tested is placed. The Art of Perfumery And Methods of Obtaining the Odors of Plants The only reaction based upon the chemical constitution of fat is produced by treatment of oleic or linoleic acid with nitrous acid, which therefore is of some value in the examination of drying oils. Scientific American Supplement, No. 470, January 3, 1885 Like all other acids, the nitrous acid has a strong affinity to water; but it is not capable of so much concentration as the vitriolic. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The sulphuric acid of the bisulphate combines with the base, and liberates the nitric acid, while the tube contains the nitrous acid gas. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The nitrous acid may be converted into nitric acid by introducing a hot compressed air jet into the gases before they pass into the condensers. Nitro-Explosives: A Practical Treatise The action of nitric acid, nitrous acid, chlorine, sulphuric acid, &c., on fats is the same as that of these bodies on the fatty acids. The Art of Perfumery And Methods of Obtaining the Odors of Plants Another method is based upon the different behaviour of the corresponding nitro-alkyl with nitrous acid. The Project Gutenberg Encyclopedia Volume 1 of 28 The nitrous acid unites with phlogiston, alkalis, metallic substances, and calcareous earth. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Substances containing nitric acid may be heated in a glass tube closed at one end, by which the characteristic red fumes of nitrous acid are eliminated. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Among those who improved the manufacture of nitro-glycerine was Mowbray, who, by using pure glycerine and nitric acid free from nitrous acid, made very great advances in the manufacture. Nitro-Explosives: A Practical Treatise As the mercury has a greater affinity than silver with the nitrous acid, the silver becomes precipitated; and, being deprived of the nitrous oxygene by the mercury, sinks down in its metallic form and lustre. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation The boiling is now continued till near dryness, when five cubic centimeters hydrochloric acid are added, after which the solution is boiled as long as any reddish-yellow vapors of nitrous acid are observed. Scientific American Supplement, No. 324, March 18, 1882 The particular kinds of saline substances formed by the union of the nitrous acid with the several metals and earths may be seen in tables constructed for the purpose. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z With a glass rod place a drop or two of strong nitric acid containing nitrous acid near the drop of bile; bring the acid and bile into contact. A Practical Physiology So we say that nitrous acid is more reliable than nitric for etching. The Note-Books of Samuel Butler Into marine and nitrous acids as mentioned above. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation Should nitrous acid still show itself, some more hydrochloric acid is added and the boiling continued. Scientific American Supplement, No. 324, March 18, 1882 Though this is denominated a weaker acid than the nitrous, yet it will take silver, lead, or mercury, from their union with the nitrous acid. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z This is prepared by dissolving filings or slips of copper with nitrous acid in a receiver. Young's Demonstrative Translation of Scientific Secrets The nitrite bacteria replace two of the hydrogen atoms in ammonia with one of oxygen, and insert another oxygen atom between the nitrogen and the remaining hydrogen, thus forming nitrous acid; H-O-N=O, or HNO2. The Story of the Soil; from the Basis of Absolute Science and Real Life, Oxygene looses less heat when converted into nitrous acid than in any other of its combinations 226 Sparks from the collision of flints are electric. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation It has long been known that the carbonic acid, and no doubt nitric and nitrous acids, which are present in rain-water, act in like manner. The formation of vegetable mould through the action of worms, with observations on their habits Thus with three parts of sugar, and thirty of nitrous acid, one part of the proper acid of sugar may be obtained. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The use of a capillary tube for the addition of sodium nitrite prevents loss of nitrous acid by local reaction at the surface of the acid solution. Organic Syntheses A fulminating silver may be made by the following process: the silver must first be dissolved in pale nitrous acid, then precipitated by lime-water, dried, and exposed to the air three days. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z But as the vital air in nitrous acid is condensed from a light elastic gas to that of a heavy fluid, it must possess less heat than before. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation The nitrous acid dissolves copper with most rapidity, producing nitrous air. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z By distilling these crystals with nitrous acid, other crystals of the proper acid of sugar of milk will be obtained, similar to those of the acid of sugar. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The nitrous acid dissolves tin very rapidly without heat, and yields but little nitrous air. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Alkalies precipitate it from its solution in the nitrous acid, and dissolve the precipitate. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z But if the vessel of colourless nitrous acid be quite full and stopped, so that no space is left for the air produced to expand itself into, no change of colour takes place. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation It acts in many respects like an acid, as it decomposes nitre by distillation, when the nitrous acid flies off, and the arsenical salt of Macquer remains behind. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The nitrous acid dissolves it, and will hold more than half its weight of it in solution. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z Dissolved in the nitrous acid, it yields dephlogisticated nitrous air, with very little proper nitrous air. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z 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 Mr. Cavendish has since demonstrated that two parts of vital air or oxygene, and one part of phlogistic air or azote, being long exposed to electric shocks, unite, and produce nitrous acid. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation |
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