Oxoacids nitrogen

Nitrogen forms several oxides, with oxidation numbers ranging from - -l to +5. All nitrogen oxides are acidic oxides and some are the acid anhydrides of the nitrogen oxoacids (Table 15.2). In atmospheric chemistry, where the oxides play an important two-edged role in both maintaining and polluting the atmosphere, the) are referred to collectively as NO (read nox ). 

Nitrides, phosphides and arsenides Halides, oxohalides and complex halides Oxides of nitrogen Oxoacids of nitrogen... 

Nitrogen Oxoacids and Oxoanions The two common nitrogen oxoacids are nitric acid and nitrous acid. The first two steps in the Ostwald process for the production of nitric acid are the oxidations of NH3 to NO and of NO to NO2. The final step is a disproportionation, as the oxidation numbers show ... 

Nitric acid is the most stable and important of the nitrogen oxoacids however, the pure acid decomposes on heating to yield a mixture of oxides, one of which is the brown gas NO2. A powerful oxidizing agent, HNO3 reacts with a host of metals and nonmetals. 

Nitrogen Oxoacids and Oxoanions There are two common oxoacids of nitrogen (Figure 14.9) ... 

All nitrogen oxides are acidic oxides and some are the anhydrides of nitrogen oxoacids. 

Non-metals — These are often oxidised to the corresponding oxoacid, and nitrogen oxide is formed. For example, sulphur gives sulphuric acid with cold concentrated nitric acid ... 

This section deals with the binary compounds that nitrogen forms with metals, and then describes the extensive chemistry of the hydrides, halides, pseudohalides, oxides and oxoacids of the element. The chemistry of P-N compounds is deferred until Chapter 12 (p. 531) and S-N... 

Nitrogen forms numerous oxoacids, though several are unstable in the free state and are known only in aqueous solution or as their salts. The principal species are summarized in Table 11.12 of these by far the most stable is nitric acid and this compound, together with... 

The important compounds of nitrogen with hydrogen are ammonia, Irydrazine, and hydrazoic acid, the parent of the shock-sensitive azides. Phosphine forms neutral solutions in water reaction of phosphorous halides with water produces oxoacids without change in oxidation number. 

Nitrogen forms oxides in each of its integer oxidation states front +1 to +5 the properties of the oxides and oxoacids are related to the oxidation number of nitrogen in the compound. 

Figure 8.13 The central role of transdeamination in metabolism of amino adds and further metabolism of the oxoacids in the liver. The box contains the reactions for conversion of the amino acids to their respective oxoacids. Processes are as follows (1) digestion of protein in the intestine and absorption of resultant amino acids, (2) degradation of endogenous protein to amino acids (primarily but not exclusively muscle protein), (3) protein synthesis, (4) conversion of amino acid to other nitrogen-containing compounds (see Table 8.4), (5) oxidation to CO2, (6) conversion to glucose via gluconeogenesis, (7) conversion to fat.

Figure 8.17 The metabolism of branched-chain amino acids in muscle and the fate of the nitrogen and oxoacids. The a-NH2 group is transferred to form glutamate which is then aminated to form glutamine. The ammonia required for aminab on arises from glutamate via glutamate dehydrogenase, but originally from the transamination of the branded chain amino acids. Hence, they provide both nitrogen atoms for glutamine formation.

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