Basicity, of ammonia and

Suppose for example we wished to compare the basicities of ammonia and pyndme... 

In summary, the chemistry of ammonia solutions is remarkably parallel to that of aqueous solutions. The principal differences are in the increased basicity of ammonia and its reduced dielectric constant. The latter not only reduces the solubility of iotuc materials, it promotes the formation of ion pairs and ion clusters. Hence even strong acids, bases, and salts are highly associated. 

The amide 2 is paracetamol, the popular analgesic. Amines are much more nucleophilic than phenols (compare the basicities of ammonia and water) so reaction with acetic anhydride gives... 

Substitution by Alkyl Groups As an example, consider the relative basicities of ammonia and methylamine. Alkyl groups are electron-donating toward cations, and methylamine has a methyl group to help stabilize the positive charge on nitrogen. 

TABLE 28-2 Basicities of Ammonia and Some Amines in Water ... 

A major problem with Arrhenius s acid-base theory is that some substances, like ammonia, produce basic solutions and react with acids, but do not contain hydroxide ions. In 1923 Johannes Bronsted, a Danish chemist, and Thomas Lowry, an English chemist, independently proposed a new way to define acids and bases. An acid donates hydrogen ions (also called a proton donor) a base accepts hydrogen ions (also called a proton acceptor). These definitions not only explain all the acids and bases covered by Arrhenius s theory, they also explain the basicity of ammonia and ions such as carbonate, and phosphate, P04 ... 

Table 6.9 relates the basicity of ammonia and some very simple allg lamines by tabulating the values of the related ammonium ions. 

The relative order of basicities of ammonia and methylamines in aqueous solution is well-known to be... 

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