To determine basicity acid vote chemical compound, it can be inorganic and organic.The fact that any inorganic acid consists of one or more of hydrogen ions and an acid anion residue.Organic also consists of base oil (in some cases, for example, amino acids in the molecule includes more radicals containing nitrogen) and one or more carboxyl functional groups - COOH.
If you are dealing with an inorganic acid, its value is mainly determined by the number of hydrogen ions in a molecule.Here, for example, hydrochloric acid (HCl).Its molecule consists of a hydrogen ion and a chloride ion, therefore, it is monobasic.Hydrofluoric (or hydrofluoric) acid (HF) - also monoba
sic.Monobasic acid is nitric (HNO3).
And if we were talking about organic acid?For example, an existing house vinegar, because it is acetic acid with the formula CH3 - COOH.What is its basicity ?See how many of the functional carboxyl groups in its structure.Just one, then this, too, monobasic acid.
Surely you've seen the process of quenching soda, that is, when the baking soda (NaHCO3) exposed to vinegar.Immediately begin a rapid hiss.Why is that?Yes, because formed very weak carbonic acid (H2CO3), which almost immediately decomposes into water and carbon dioxide, reaction: H2CO3 = CO2 + H2O.Here the acid - dibasic, as part of its molecule two hydrogen ions.By the way, most of the other dicarboxylic acids, such as hydrogen sulfide or H2S sour H2SO3 too weak.The exception is, perhaps, the only well-known sulfuric acid (H2SO4).She's very strong.
And that organic acids?For example, oxalic acid (HOOC-COOH) also dibasic, because it includes two carboxyl groups.There tribasic inorganic acid, such as boric (H3BO3), phosphoric (H3PO4), citric acid (C6H8O7).