View Full Version : H3o+

09-07-2003, 11:39 AM
H3O+ (sorry, no superscripts/subscripts here...)

I'm supposed to name it on a worksheet for AP Chem... the others are easy, just little compounds made from an element and a poly atomic ion, like barium sulfate. But I don't get what H3O+ is... how would you name it? (I googled, but got hydronium, which doesn't make sense)

09-07-2003, 11:48 AM
Nevermind that, hydronium is on the back side of this sheet :-/

How about CO2(SO4)3 though? It's been a while since I took Honors Chem

09-07-2003, 11:53 AM
That would be three hydrogen atoms and a positive Oxegen ion I think

09-07-2003, 12:39 PM
umm Dicobalt-trisulphate? That's just a guess.

09-07-2003, 12:46 PM
Wouldn't that be dicarbonate trisulphate?

09-07-2003, 12:49 PM
I figured the Co was cobalt rather than a carbon and an oxygen because otherwise the carbon has an oxidation state of 10+.... i'm thinking not.

09-07-2003, 12:50 PM
I didn't bother figuring out the charges etc, and I just assumed that since he had CO for carbonate, not Co for cobalt.

09-07-2003, 12:53 PM
Yea that's how he's written it, but it can't be. Both carbonate and sulphate are negatively charged groups, plus carbonate is CO3 not CO2.

09-07-2003, 12:54 PM
Does it show that I haven't taken chem in a couple of years?

09-07-2003, 01:59 PM
Good call... looking at the sheet again, perhaps that o in the Co is lowercase... it's hand written by the teacher and it REALLY looks close.

Cobalt (III) Sulfate looks right.

09-07-2003, 03:07 PM
so what level is AP chem? Is it like highschool, or a minor at uni, or what?

09-07-2003, 03:31 PM
AP Chem is a college-level highschool course. Basically, you take it in high school (I'm a senior), but it's taught like a college course. At the end of the year (in may) you take an exam, and colleges award you credits or placement based on how well you score on a scale of 5.