A little bit of chemistry - one more question

[godspeedx]

i need to know the formula for this:

cobalt(III) hydroxide

oxygen's charge is -2 if you need that

 

[MazerRackham]

Is the overall complex charged or neutral? Hydroxide is actually -1 charged in this case, you're thinking of oxide which is -2. If it's neutral and Co(III), then it would have to be Co(OH)3.

 

[illusion88]

its called PAY ATTENTION IN CLASS!

hang on... let me bust out my onld table of elements and ill get back to ya.

 

[godspeedx]

overall complex is neutral

i was in Florida on vacation for a week and didn't get taught this

 

[ohtwell]

Co(OH)3

That's if it's neutral.


: ) Amanda

 

[McPhreak]

Originally posted by: ohtwell
Co(OH)3

 

[godspeedx]

OH GEEZ lol now i see that hydroxide is a polyatomic ion with a -1 charge
it all makes sense now

thanks lots

 

[illusion88]

Danm he beat me to it. Yeah that looks right.
Just a little explaniation
Co(III) has a charge of +3. Hydroxide is a polyatomic (sp?) Ion OH-1. So we simple put the cation up there in front and the Anion in the back and we get Co+3OH-1. Sience this isnt balanced we say its Co(OH)3

BOOM!

 

[godspeedx]

yup just realized that, thanks

hydroxide scared me, until i saw that it was a p.i.

 

[godspeedx]

ok, i got one more question

aluminun sulfide - that's Al2S3 correct?

aluminum's charge +3
sulfur's charge -2

 

[GoSharks]

easier and faster way would be to plug in the name into your favorite search engine and let it go

example, aluminuM sulfide