Nitric aoid

F. T. Austen said that hydrogen burns with an intense white flame in the vapour of nitric aoid. H. Gall and W. Manohot said that the catalytic reduction of nitric acid in aq. soln. in the presence of spongy platinum yields ammonia and nitrous aoid. If water be gradually added to the fuming acid, the reddish-brown colour changes... 

Molecular might =68. Molecular volume m. 1 litre of nitric aoid vapour might 81 B oritke. Butee at —SO0. Both at 84° 3. 

By the oxidation of amorphons phosphorus with nitric aoid, aud then boiling the product with water. 

Cypresaeoe yields, nn ovidaiion with nitric acid, an amoi plioos yellow product aud au aoid possessing the odour of isovaleric acid the amorphous product dissolve.- in aitalies with a red coloration. 

In tho manu cture of sulphuiio aoid on the large scale, the nitrous anhydride is again acted on by water and transformed into nitric acid and nitric oxide ... 

When the concentrated acid is exposed to the air it imbibes moisture and if mixed with water it absorbs a sensible amount of heat, owing to the formation of another hydrate of much greater persistency, This stable liydrate contains four equivalents of water, and one of nitric acid (HO, NO, 3 Aq.) it hea a specific gravity of 1 424, and is composed of sixty per cent, of anhydrous aoid, and forty of water. This hydrate has a higher boiling point than the protokydrato, and distils at 250° unaltered. 

Tho only part of the nitre system, if it may be so termed, which appears open to objection, or whioh may be cavilled at, is the contact of the nitric and sulphurous acids at a high temperature, and in consequence the, possible decomposition of tho nitrlo aoid either into nitrons oxide or nitrogen, both totally inactive, and for the required,purpose wholly useless gases. That such a circumstance has taken place is inferred from a fact which occurred jc actual practice. A set of burners were worked to their utmost consumption they became. very hot, and required much more nitrate to keep the chamber in proper working order than previously. It would be difficult, in fact almost impossible, to prove the truth of such an opinion but, nevertheless, it is... 

Boiled with nitric acid, tartario acid is decomposed into acetic, oxalic, and saccharic aoids. Boiled with hyper-oxide of lead, it becomes oxidizod and changed into formate of lead, water, and carbonate of lead, thus—... 

On the heat of neutralization by hydroohlorio acid, hydrobromio add, hydriodio aoid, and nitric add compare Richards and Rowe, J. rimer. Chem. Soc., 1922, 44, 684. 

Castillo, L Beaumicr, L., Ajami, A. M., and Voung, V R. (1996). Whole body nitric oxide synthesis In healthy men determined from [ Nlafginine to-[ Nlcitrulline label ng. Pnxr. Wfltl. Aoid. Se.i. LI.S.A. 93,11460-11465. 

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