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Topic: New nomenclature  (Read 1502 times)

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New nomenclature
« on: May 17, 2017, 11:02:05 AM »
Hi there!
I've recently been surfing on the Interenet and I've noticed some new names of compound. For example HClO4 (that is named perchloric acid) is named chloric acid such as HClO3 in wikipedia. Is there anyone that could explain me what are the rules that permit me tu identify the compound name along the new nomanclature.
Thanks a lot

Offline mjc123

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Re: New nomenclature
« Reply #1 on: May 17, 2017, 11:27:32 AM »
Perchloric acid is called perchloric acid on Wikipedia, and chloric acid is called chloric acid. I just checked.
There is a more systematic nomenclature where the oxidation state of the central atom is used instead of potentially ambiguous prefaces or suffixes.
Thus HClO4 is chloric(VII) acid, and HClO3 is chloric(V) acid.
Similarly H2SO4 is sulfuric(VI) acid and H2SO3 is sulfuric(IV) acid, and so on.

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