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The pkb of aniline (c6h7n) is 9.4. The dominant species present in water if the ph is held constant at ph = 6 is [tex]C_{6}H_{8}N^{+},OH^{-}[/tex].
What is aniline?
Organic substance aniline has the chemical formula C6H5NH2. The simplest aromatic amine is aniline, which consists of an amino group joined to a phenyl group. It is an important commodity chemical for industry and a flexible starting point for the synthesis of fine chemicals. The production of colours, industrial chemicals, and precursors to polyurethane are its principal uses. It smells like rotting fish, just like the majority of volatile amines. It easily ignites and burns with the smoky flame that is typical of aromatic chemicals. Humans are toxic to it.
In comparison to benzene, it has more electrons. As a result, it takes part in electrophilic aromatic substitution processes more quickly. It is also susceptible to oxidation; whereas newly purified aniline is a nearly colourless oil, exposure to air causes a gradual darkening to yellow or red as a result of the production of brightly coloured, oxidised impurities. A diazonium salt can be produced by diazotizing aniline, and this salt can then go through a variety of nucleophilic substitution processes.
The word "aniline" is derived from the Portuguese word anil, which means "the indigo bush" and "derived material," respectively.
Although less so than structurally related aliphatic amines, aniline is a base (pKaH = 4.6) and a nucleophile like other amines.
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