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Find the odd man out hydrochloric acid sulphuric acid acetic acid nitric acid

Back to science! I know that a lot of labs, and even whole departments, especially in academia, often just go straight alphabetical. The question was not so much whether that makes sense or not, but whether or not it can lead to very incompatible things being crammed in right next to each other. Then you have the whole room temperature versus fridge versus freezer storage issue as well, which also tends to separate out the more reactive stuff into the colder compartments. Individuals and individual labs, naturally, sometimes evolve their own systems. Synthon-based storage tends to get hard to manage after a while, especially with multiple functional groups, but it can be very convenient.



Acetic acid, carbonic acid,hydrochloric acid, nitric acid. Identify the odd one out and justify.

This website uses cookies to ensure you get the best experience. Learn more Got it! It dissolves readily in strong nitric acid, and the helium contained is thus liberated. On oxidation with chromic or nitric acids, or potassium permanganate, it yields nicotinic acid or 3-pyridine carboxylic acid, C 5 H 4 N CO 2 H; alkaline potassium ferricyanide gives nicotyrine, C10H10N2, and hydrogen peroxide oxynicotine, C10H14N It is an indigo-blue powder, soluble in hydrochloric acid, but insoluble in dilute nitric and sulphuric acids.

Iridium tetrachloride, IrC1 41 is obtained by dissolving the finely divided metal in aqua regia; by dissolving the hydroxide in hydrochloric acid; and by digesting the hydrated sesquichloride with nitric acid. It decomposes steam at a red heat, and slowly dissolves in dilute hydrochloric and sulphuric acids, but more readily in nitric acid. It is somewhat readily oxidized; nitric acid gives carbonic and oxalic acids, and chromic acid, carbonic and acetic acids.

Heated with sulphuric acid and with nitric acid it is oxidized to boric acid, whilst on fusion with alkaline carbonates and hydroxides it gives a borate of the alkali metal.

Brugnatelli, who found in that if silver be dissolved in nitric acid and the solution added to spirits of wine, a white, highly explosive powder was obtained. Cadmium nitrate, Cd N03 2. Molybdenum trioxide, Mo03, is prepared by oxidizing the metal or the sulphide by heating them in air, or with nitric acid. The molybdates may be recognized by the fact that they give a white precipitate on the addition of hydrochloric or nitric acids to their solutions, and that with reducing agents zinc and sulphuric acid they give generally a blue coloration which turns to a green and finally to a brown colour.

It is a yellow amorphous powder which is soluble in dilute alkalis, the solution on acidification giving an hydroxide, C1 4 Mo 3 OH 2, which is soluble in nitric acid, and does not give a reaction with silver nitrate. Nitro-phenols are readily obtained by the action of nitric acid on phenol. By the action of dilute nitric acid; orthoand para-nitrophenols are obtained, the ortho-compound being separated from the para-compound by distillation in a current of steam.

Two oxides of germanium are known, the dioxide, GeO2, being obtained by roasting the sulphide and treatment with nitric acid. The following table gives the heats of neutralization of the commoner strong monobasic acids with soda: - Hydrochloric acid Hydrobromic acid Hydriodic acid Nitric acid Chloric acid Bromic acid Within the error of experiment these numbers are identical.

A mixture of carbon bisulphide vapour and nitric oxide burns with a very intense blue-coloured flame, which is very rich in the violet or actinic rays. These are washed with ammonium chloride until the filtrate is colourless, ignited, fused with caustic potash and nitre, the melt dissolved in water and nitric acid added to the solution until the colour of potassium ruthenate disappears. The insoluble residue contains a mixture of two sulphides, one of which is converted into the sulphate by nitric acid, whilst the other a crystalline solid is insoluble in acids.

Again, in nitrous oxide we have a compound of 8 parts by weight of oxygen and 14 of nitrogen; in nitric oxide a compound of 16 or 8 X 2 parts of oxygen and 1 4 of nitrogen; in nitrous anhydride a compound of 24 or 8 X 3 parts of oxygen and 14 of nitrogen; in nitric peroxide a compound of 3 2 or 8 X 4 parts of oxygen and 14 of nitrogen; and lastly, in nitric anhydride a compound of 4 o or 8 X 5 parts of oxygen and 14 of nitrogen. For example take the oxides of nitrogen, N 2 0, NO, N 2 0 3, NO 2, N 2 0 5; these are known respectively as nitrous oxide, nitric oxide, nitrogen trioxide, nitrogen peroxide and nitrogen pentoxide.

Group V. The mineral acids, hydrochloric, nitric and sulphuric acids, and also aqua regia a mixture of hydrochloric and nitric acids were discovered, and the vitriols, alum, saltpetre, sal-ammoniac, ammonium carbonate, silver nitrate lunar caustic became better known.

Glauber showed how to prepare hydrochloric acid, spiritus salis, by heating rock-salt with sulphuric acid, the method in common use to-day; and also nitric acid from saltpetre and arsenic trioxide. Sulphuretted hydrogen and nitric oxide were discovered at about the same time.

Lavoisier, to whom chemistry was primarily the chemistry of oxygen compounds, having developed the radical theory initiated by Guyton de Morveau, formulated the hypothesis that vegetable and animal substances were oxides of radicals composed of carbon and hydrogen; moreover, since simple radicals the elements can form more than one oxide, he attributed the same character to his hydrocarbon radicals: he considered, for instance, sugar to be a neutral oxide and oxalic acid a higher oxide of a certain radical, for, when oxidized by nitric acid, sugar yields oxalic acid.

For example: nitric acid and sulphuric acid readily react with benzene and its homologues with the production of nitro derivatives and sulphonic acids, while in the aliphatic series these acids exert no substituting action in the case of the olefines, the latter acid forms an addition product ; another distinction is that the benzene complex is more stable towards oxidizing agents.

This compound is readily oxidized to benzoic acid, C 6 H 5 H, the aromatic residue being unattacked; nitric and sulphuric acids produce nitro-toluenes, C6H4 CH3 N02j and toluene sulphonic acids, C 6 H 4 CH 3 SO 3 H; chlorination may result in the formation of derivatives substituted either in the aromatic nucleus or in the side chain; the former substitution occurs most readily, chlor-toluenes, C 6 H 4 CH 3 Cl, being formed, while the latter, which needs an elevation in temperature or other auxiliary, yields benzyl chloride, C 6 H 5 CH 2 C1, and benzal chloride, C 6 11 5 CHC1 2.

Substitution of the Benzene Ring. Boyle recognized many reagents which gave precipitates with certain solutions: he detected sulphuric and hydrochloric acids by the white precipitates formed with calcium chloride and silver nitrate respectively; ammonia by the white cloud formed with the vapours of nitric or hydrochloric acids; and copper by the deep blue solution formed by a solution of ammonia.

Small portions should be successively tested with waterMilute hydrochloric acid, dilute nitric acid, strong hydrochloric acid, and a mixture of hydrochloric and nitric acids, first in the cold and then with warming.

Silver chloride goes into solution, and may be precipitated by dilute nitric acid. The residue from the ammonium sulphide solution is warmed with dilute nitric acid. Similarly, normal solutions of hydrochloric and nitric acids can be prepared. The first class includes those substances which require no preliminary treatment, and comprises the amides and ammonium compounds, pyridines, quinolines, alkaloids, albumens and related bodies; the second class requires preliminary treatment and comprises, with few exceptions, the nitro-, nitroso-, azo-, diazoand amidoazo-compounds, hydrazines, derivatives of nitric and nitrous acids, and probably cyanogen compounds.

The halogens may be estimated by ignition with quicklime, or by heating with nitric acid and silver nitrate in a sealed tube. The first product of the reaction is nitric oxide, which on cooling with the residual gases produces nitrogen peroxide.

It is a colourless gas, which is practically odourless, but possesses a sweetish taste. Nitric oxide, NO, first obtained by Van Helmont, is usually prepared by the action of dilute nitric acid sp. If the gas be mixed with the vapour of carbon disulphide, the mixture burns with a vivid lavender-coloured flame Nitric oxide is soluble in solutions of ferrous salts, a dark brown solution being formed, which is readily decomposed by heat, with evolution of nitric oxide.

Nascent hydrogen reduces it to hydroxylamine q. Glauber in as a product of the reaction between nitric acid and arsenious oxide. He then tried the direct combination of nitric oxide with liquid nitrogen peroxide. Nitrogen peroxide, NO 2 or N, may be obtained by mixing oxygen with nitric oxide and passing the red gas so obtained through a freezing mixture. The production of this red gas when air is mixed with nitric oxide was mentioned by R.

It converts many metallic oxides into mixtures of nitrates and nitrites, and attacks many metals, forming nitrates and being itself reduced to nitric oxide.

It may also be obtained by distilling nitric acid over phosphorus pentoxide. Bromine oxidizes it to nitric acid, but the reaction is not quantitative. In acid solution, potassium permanganate oxidizes it to nitric acid, but in alkaline solution only to nitrous acid.

The silver salt is a bright yellow solid, soluble in dilute sulphuric and nitric acids, and may be crystallized from concentrated solutions of ammonia. The calcium salt, CaN 2 O 2. In aqueous solution the free acid acts as an oxidizing agent, bleaching indigo and liberating iodine from potassium iodide, or it may act as a reducing agent since it readily tends to pass into nitric acid: consequently it discharges the colour of acid solutions of permanganates and chromates.

It is a gas at ordinary temperature; when liquefied it boils at Water decomposes it into nitric and hydrofluoric acids. Nitramide, NH 2 NO 2, is obtained by the action of sulphuric and nitric acids on potassium imidosulphonate, or by the action of ice-cold sulphuric acid on potassium nitro-carbamate J.

The reagents in common use are: Millon's reagent, a solution of mercuric nitrate containing nitrous acid, this gives a violet-red coloration; nitric acid, which gives a yellow colour, turning to gold when treated with ammonia xanthoproteic reaction ; fuming sulphuric acid, which gives violet solutions; and caustic potash and copper sulphate, which, on warming, gives a red to violet coloration biuret reaction.

It is a very stable compound, chlorine, concentrated nitric acid and hydriodic acid having no action upon it. Dilute nitric acid readily dissolves the metal, with formation of nitrate Pb N03 2. It is also obtained by passing chlorine into a suspension of lead oxide or carbonate, or of magnesia and lead sulphate, in water; or by treating the sesquioxide or red oxide with nitric acid. Heating or exposure to sunlight reduces it to the red oxide; it fires when ground with sulphur, and oxidizes ammonia to nitric acid, with the simultaneous formation of ammonium nitrate.

It oxidizes a manganese salt free from chlorine in the presence of nitric acid to a permanganate; this is a very delicate test for manganese. Lead fluoride, PbF2, is a white powder obtained by precipitating a lead salt with a soluble fluoride; it is sparingly soluble in water but readily dissolves in hydrochloric and nitric acids. It dissolves in strong nitric acid with the formation of the nitrate and sulphate, and also in hot concentrated hydrochloric acid.

Lead nitrate, Pb N03 2, is obtained by dissolving the metal or oxide in aqueous nitric acid; it forms white crystals, difficultly soluble in cold water, readily in hot water and almost insoluble in strong nitric acid.

The beautiful yellow precipitate is little soluble in dilute nitric acid, but soluble in caustic potash. But the most delicate precipitant for lead is sulphuretted hydrogen, which produces a black precipitate of lead sulphide, insoluble in cold dilute nitric acid, less so in cold hydrochloric, and easily decomposed by hot hydrochloric acid with formation of the characteristic chloride.

Paraldehyde is oxidized by dilute nitric acid, with formation of much glyoxal, CHO 2. It oxidizes readily: exposure to air giving acrylic acid, nitric acid giving oxalic acid, bichromate of potash and sulphuric acid giving carbon dioxide and formic acid.

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. The nitro compounds of the lower members of the paraffin series cannot be prepared by the direct action of nitric acid on the hydrocarbons themselves, but, in the case of some of the higher members of the series direct nitration is possible M.

Chlorpicrin, CC1 3 NO 2, is a liquid of suffocating odour obtained by the action of nitric acid and chloride of lime on many organic compounds. Aromatic Nitro Compounds. In one process the purified ore is disintegrated with hot nitric acid to produce nitrates, which are then converted into sulphates by evaporation with sulphuric acid. It is obtained as fine lemon yellow deliquescent prisms by evaporating a solution of any of the oxides in nitric acid. It is insoluble in water and in nitric acid and apparently so in hydrochloric acid; but if heated with this last for some time it passes into a compound, which, after the acid mother liquor has been decanted off, dissolves in water.

Metastannic acid is distinguished from orthostannic acid by its insolubility in nitric and sulphuric acids. GUNCOTTON, an explosive substance produced by the action of strong nitric acid on cellulose at the ordinary temperature; chemically it is a nitrate of cellulose, or a mixture of nitrates, according to some authorities. Pelouze in , who observed that when paper or cotton was immersed in cold concentrated nitric acid the materials, though not altered in physical appearance, became heavier, and after washing and drying were possessed of self-explosive properties.

Bottger of Frankfort and Otto and Knop, all of whom added to our knowledge of the subject, the last-named introducing the use of sulphuric along with nitric acid in the nitration process. The products of the action of nitric acid on cellulose are not nitro compounds in the sense that picric acid is, but are nitrates or nitric esters. Guncotton is made by immersing cleaned and dried cotton waste in a mixture of strong nitric and sulphuric acids.

The gaseous mixture obtained by burning guncotton in a vacuum vessel contains steam, carbon monoxide, carbon dioxide, nitrogen, nitric oxide, and methane. Under very great pressures carbon monoxide, steam and nitrogen are the main products, but nitric oxide never quite disappears. Strong sulphuric acid in contact with it liberates first nitric acid and later oxides of nitrogen, leaving a charred residue or a brown solution according to the quantity of acid.

Guncottons are examined for degree of nitration by the nitrometer, in which apparatus they are decomposed by sulphuric acid in contact with mercury, and all the nitrogen is evolved as nitric oxide, NO, which is measured and the weight of its contained nitrogen calculated. They all contain albumen and throw down a precipitate with heat and nitric acid. Torino, by acting with a mixture of strong nitric and sulphuric acids on glycerin at the ordinary temperature.

In the manufacture glycerin is dropped in a very thin stream into a mixture of 3 parts of nitric sp. When the solution in the strong acid is allowed to stand, some nitric acid is first evolved, and as the temperature rises this is followed by a general decomposition of the substance, though not necessarily an explosive one. Shaken with mercury and sulphuric acid, nitroglycerin yields its nitrogen as nitric oxide; the measurement of the volume of this gas is a convenient mode of estimating nitroglycerin.

The former is completely decomposed when fused with caustic potash and the latter by a prolonged boiling with nitric acid. Aqua Regia, a mixture of nitric and hydrochloric acids, converts all metals even gold, the "king of metals," whence the name into chlorides, except only rhodium, iridium and ruthenium, which, when pure, are not attacked.

It is oxidized by nitric acid to d-saccharic and mucic acids; and acetic anhydride gives an octa-acetate. Styrolene is oxidized by nitric or chromic acids to benzoic acid; reduction gives ethylbenzene; hydrochloric and hydrobromic acids yield a-haloid ethylbenzenes, e.

Nitrostyrolene results when styrolene is treated with fuming nitric acid. Its chief uses are in glass-making to promote fluidity, in metallurgy to oxidize impurities, as a constituent of gunpowder and in pyrotechny; it is also used in the manufacture of nitric acid. The chief applications of Chile saltpetre are in the nitric acid industry, and in the manufacture of ordinary saltpetre for making gunpowder, ordinary Chile saltpetre being unsuitable by reason of its deliquescent nature, a property, however, not exhibited by the perfectly pure salt.

Chemical Storage, Good and Not So Good

These solutions for Acids, Bases And Salts are extremely popular among Class 7 students for Science Acids, Bases And Salts Solutions come handy for quickly completing your homework and preparing for exams. Acids a turn blue litmus red b have a sour taste c react with carbonates to give carbon dioxide d all of the above. Which of the following can be used to neutralise an acid? A base is used to neutralise an acid. When a substance X was added to turmeric, there was no colour change.

Pick out the odd one and give reason: Cutting of log, Crystallization, Melting of ice, Curdling of Milk. Pick out the odd one and give reason: Vinegar, Malic acid, Tartaric acid, Hydrochloric acid.

Isoxazole oxadiazon isoxaflutole , it is known that chemical name is 5-cyclopropyl[2-methyl sulphonyl fluoroform Base benzoyl] isoxazole, by following formula I:. Isoxazole oxadiazon is p-hydroxybenzene acetone acid dioxygenase inhibitor. This enzyme is by p-hydroxybenzene pyruvate It is converted into one committed step in plastoquinone biosynthesis of homogentisate. The suppression of this enzyme causes carotenoid Biosynthetic indirect suppression, causes the chlorosis newly grown. Isoxazole oxadiazon first by B.

CN105849091A - A process for preparing isoxaflutole - Google Patents

Although it sounds odd, one of the best ways to discriminate fiber specimens is by attempting to dissolve them in various solvents. For example, you may have identified a questioned fiber as artificial by the burning test, but you do not yet know what type of artificial fiber it is. By attempting to dissolve a small specimen of that fiber in each of several solvents, you can determine if it is, for example, nylon, acetate, or polyester. Solubility tests are particularly important for discriminating artificial and reconstituted fibers, because they are produced by machinery and so lack the microscopic variations characteristic of natural fibers. For example, although it is easily possible to discriminate wool or cotton from an artificial fiber microscopically, it may be impossible to determine whether an artificial fiber is acetate or polyester without performing solubility or other chemical tests. Professional forensic scientists use a wide variety of solvents for solubility tests, but many of those solvents are expensive or difficult to obtain for a home lab. Nylon dissolves, but very slowly. Rayons dissolve slowly.

Forensics Lab 6.7: Test Fiber specimens by Solubility

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The questions posted on the site are solely user generated, Doubtnut has no ownership or control over the nature and content of those questions. Doubtnut is not responsible for any discrepancies concerning the duplicity of content over those questions. Study Materials.

7th Science Unit Test 2 Question Paper

Translate texts with the world's best machine translation technology, developed by the creators of Linguee. Look up words and phrases in comprehensive, reliable bilingual dictionaries and search through billions of online translations. Look up in Linguee Suggest as a translation of "hydrochloric acid and nitric acid" Copy. DeepL Translator Linguee.

This website uses cookies to ensure you get the best experience. Learn more Got it! It dissolves readily in strong nitric acid, and the helium contained is thus liberated. On oxidation with chromic or nitric acids, or potassium permanganate, it yields nicotinic acid or 3-pyridine carboxylic acid, C 5 H 4 N CO 2 H; alkaline potassium ferricyanide gives nicotyrine, C10H10N2, and hydrogen peroxide oxynicotine, C10H14N It is an indigo-blue powder, soluble in hydrochloric acid, but insoluble in dilute nitric and sulphuric acids. Iridium tetrachloride, IrC1 41 is obtained by dissolving the finely divided metal in aqua regia; by dissolving the hydroxide in hydrochloric acid; and by digesting the hydrated sesquichloride with nitric acid.

Account Options Sign in. My library Help Advanced Book Search. Get print book. Shop for Books on Google Play Browse the world's largest eBookstore and start reading today on the web, tablet, phone, or ereader. Nursing Entrance Examination. User Review - Flag as inappropriate i just have to say that all of this is inspiring and i never would have thought of being part of this team and i want to thank all of this book to help me see my future. User Review - Flag as inappropriate Its good. Helpful for all the students preparing for their entrance.

Which of these elements is the odd one out? Li Na Mg K to produce hydrochloric acid, HCl(aq). The diagram below shows the signs you may see during a chemical reaction. E.g. sodium hydroxide + sulphuric acid → sodium sulphate + water copper carbonate + nitric acid → copper nitrate + water + carbon dioxide.








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