Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Naming Acids

  1. Feb 22, 2005 #1
    Why is HCl called hydrochloric acid, not just "chloric" acid?

    I mean, we don't say hydronitric acid, nor do we say hydrosulfuric acid.

    But then why is HCl called hydrochloric acid, not just chloric acid? (i mean, we do add the hydrogen for acid)

    My guess is that this is so because the anion (Cl-) of HCl is just a single element, not something like NO3, or SO4...well, u see...

    But is this why we say hydrochloric, not just chloric? Well, if not, then why?
     
    Last edited: Feb 22, 2005
  2. jcsd
  3. Feb 22, 2005 #2

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    Okay,assume HCl=chloric acid,but how will u name HClO_{3}...?

    Daniel.
     
  4. Feb 24, 2005 #3
    Ahh...i see; "chloratic" acid would sound strange indeed! :blushing: (i.e., hydrogen chlorate);

    So then, perhaps the reason why we say "hydrochloric" acid is because HCl doesn't have an oxyanion (also, it's just one element)?
     
  5. Feb 24, 2005 #4

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    No,we never name acids from their salts,but viceversa.And salts (as in X chlorate [itex] X^{n}(ClO_{3})_{n} [/itex] assume IONIC bond between the chlorate ION and the X ION...

    Daniel.
     
  6. Feb 24, 2005 #5
    (well, now THAT makes sense!!!)
    Well .., :shy: I see now...mmhmm :surprised
    NOw i see :smile:
     
    Last edited: Feb 24, 2005
  7. Mar 1, 2005 #6
    The convention is that (inorganic) acids which are NOT oxy-acids H2SO4, HNO3, H3PO4 are common oxy-acids) have a "hydro" prefix; ie, HCl, HF, H2S, etc. A lot in chemical terminology just evolved that way! For instance, the word "oxygen" means "acid generator," and comes from an age when it was believed all acids contained that element.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?