Kendall Posted May 26, 2017 Share Posted May 26, 2017 I am working through Zumdahl Introductory Chemistry. I've just completed Chapter 5 on nomenclature. I must be missing something. I don’t see what to do with these. The book has a chart of common poyatomic ions, but Br O3 And OI isn’t on the chart. Question 40 part c and d Name each of the following acids c) HBrO3 d) HOI Working backwards from the answer of bromic acid it looks like the BrO3 must be an polyatomic Ion called bromate but I can't see that the book taught how to name that. The book gave a list of polyatomic acids and said to memorize them, but that one isn't on the list. d) the answer to HOI is hypoiodous acid. So I guess OI is called hypoiodite? Should we have been able to figure this out or should the polyatomic ion have been given to us? Thanks, Kendall Quote Link to comment Share on other sites More sharing options...
Joules Posted May 26, 2017 Share Posted May 26, 2017 If you were given another with the same atoms, you might be able to work it out, since the names are in order. For example, if the table had iodate IO3-, then you could work out that IO- was hypoiodite. Or if you were given bromite BrO2-, then you could see that BrO3-​ was bromate. But I'm pretty sure that you have to have at least one named polyatomic with the same atoms to work from. Quote Link to comment Share on other sites More sharing options...
Kendall Posted May 26, 2017 Author Share Posted May 26, 2017 I checked the chart and there aren't any listed with I or Br, but it is good to know I could work from other named polyatomic if I had it. Quote Link to comment Share on other sites More sharing options...
Arcadia Posted May 27, 2017 Share Posted May 27, 2017 (edited) Page 67 of Zumdahl's chemistry (purple) book "Acid Anion Name HClO4 Perchlorate Perchloric acid HClO3 Chlorate Chloric acid HClO2 Chlorite. Chlorous acid HClO Hypochlorite Hypochlorous acid" I would have just modified accordingly for all group 7 elements. A teacher did compiled a 5 page list. The ones you are looking for are on page 3 https://muchincollegeprep.wikispaces.com/file/view/Polyatomic%20Ions%20List.pdf/585222495/Polyatomic%20Ions%20List.pdf Edited May 27, 2017 by Arcadia Quote Link to comment Share on other sites More sharing options...
Kendall Posted May 27, 2017 Author Share Posted May 27, 2017 Thank you! I noticed on that document that Oxygen was listed last(HIO), which is what I expected rather than the HOI. Further research shows that hypoiodic acid is known both as HOI and HIO, though HIO seems to be used more. Following the pattern for the group works for Br and I. Thanks. Quote Link to comment Share on other sites More sharing options...
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