Nitrogen ammonia organic

Ammonia may be estimated by dissolving the gas in a known volume of standard acid and then back-titrating the excess acid. In a method widely used for the determination of basic nitrogen in organic substances (the Kjeldahl method), the nitrogenous material is converted into ammonium sulphate by heating with concentrated sulphuric acid. The ammonia is then driven off by the action of alkali and absorbed in standard acid. 

Nitrogen trichloride Ammonia, As, hydrogen sulflde, nitrogen dioxide, organic matter, ozone, phosphine, phosphorus, KCN, KOH, Se, dibutyl ether... 

Figure 10.8. Flow diagram for the determination of ammonia, organic nitrogen, nitrite, and nitrate using Kjeldahl apparatus [6].

Oil, charcoal, other organic materials powdered metals reducing agents strong acids alkyl esters hypochlorites Decomposition/combustion oxides of nitrogen, ammonia May detonate with strong shock or if heated A confined... 

Just as ammonia, NHif is a weak Lewi. base, there is a large group of nitrogen-containing organic compounds that behaves like weak bases and is known as ... 

Nitrogen fixation also occurs within the digestive tracts of some animals (as termites). The fixation of nitrogen in organisms that primarily consume nitrogen-free cellulose is especially important for the formation of proteins. Ammonia is assimilated into amino acids that are then polymerized into proteins. 

In addition to ammonia, organic compounds present may also react with HCIO but at a much slower rate. Therefore, in the following discussion we will consider that any chlorine added to the water under discussion reacts mainly with these nitrogenated species in the form of HCIO (recall eq. 10.1a). This acid may ionize as follows ... 

Compounds of Nitrogen. Ammonia, NHg, is an easily condensable gas (b.p. —33.35 C m.p. —77.7 C), readily soluble in water to produce an alkaline solution. The gas is colorless and has a pungent odor, often detected around st bles and manure piles, vhere ammonia is produced by decomposition of organic matter. The solution of ammonia in water is called ammonium hydroxide solution (or sometimes ammonia water or aqua ammonia). Ammonium hydroxide has the formula NH4OH. It is a ba e, which forms salts with the common acids. 

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