How are acids named? With examples!
Miscellanea / / July 04, 2021
The acids They are chemical compounds who have a pH less than 7. This means that in contact with water they produce a higher activity of the hydronium cation (H3OR+ or abbreviated, H+) than that of pure water.
There are different theories to define an acid:
Acid nomenclature
Acids can be named using several types of nomenclature:
If they are oxoacids, they are named as follows:
Estate
You can call root of the acid nomenclatureor to the word that is put to indicate the name of the non-metal. For example:
- Sulfur. Root: sulfur. Symbol: S. Examples: sulfurous acid (H2SW3), sulfuric acid (H2SW4)
- Bromine. Root: brom. Symbol: Br. Examples: hypobromous acid (HBrO), bromous acid (HBrO2), bromic acid (HBrO3), perbromic acid (HBrO4)
- Carbon. Root: carbon. Symbol: C. Examples: carbonic acid (H2CO3)
- Chlorine. Chlor root. Symbol: Cl. Example: Hypochlorous acid (HClO) chlorous acid (HClO2), chloric acid (HClO3), perchloric acid (HClO4)
- Chrome. Root: chrom. Symbol: Cr. Examples: chromic acid (H2CrO4), dichromic acid (H2Cr2OR7)
- Match. Root: phosphor / phosphon. Symbol: P. Example: phosphonic acid (H3PO3), phosphoric acid (H3PO4)
- Manganese. Root: mangan. Symbol: Mn. Examples: manganic acid (H2MnO4), permanganic acid (HMnO4)
- Nitrogen. Root: nitr. Symbol: N. Examples: nitrous acid (HNO2), nitric acid (HNO3), hyponitrous acid (H2N2OR2)
- Selenium. Root: seleni. Symbol: Se. Examples: selenium acid (H2SeO3), selenic acid (H2SeO4)
- Silicon. Root: silic. Symbol: Yes. Examples: metasilicic acid (H2Yes3), orthosilicic acid (H4Yes4), disilicic acid (H2Yes2OR5), pyrosilicic acid (H6Yes2OR7)
- Tellurium. Root: tellur. Symbol: Te. Examples: tellurous acid (H2TeO3), telluric acid (H2TeO4)
- Iodine. Root: yod. Symbol: I. Examples: iodic acid (HIO3), periodic acid (HIO4)
If they are binary acids (composed of hydrogen and a non-metallic element) they are named:
The word 'acid' is written followed by the root of the name of the nonmetal with the ending 'hydric'. For example: hydrochloric acid (HCl(ac)), hydrobromic acid (HBr(ac)).
In these cases it is important to clarify that you must put (ac) (which means that it is in aqueous solution) in the formula of the acid to specify that we are formulating the acid and not a volatile hydride, for example, hydrogen chloride (HCl).
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