Asked by Amee

What is the oxidation state of Cr in each of the following compounds?

(a) CrO
(b) CrO3
(c) Cr2 O3
Answered by Dr. Jane
Oxygen is always -2

So for the first one Cr will be +2

Now can, you figure out the other two?
Answered by Amee
Could you give an example with a written equation?
Answered by DrBob222
Dr Jane gave you an example. For CrO, O is -2 and since all compounds are zero, Cr must be +2. The other are done the same way and O is -2 in them as well.
Answered by Amee
I am really having a hard time. I am taking an online class and math is not my strong. Do I divide or multiply?
Answered by Becky
a. +2
b. +6
c. +3
We know that O is always -2 (well in most case scenerios) but when it is O2 we must take that into consideration making it -6 and then you need to make the sum 0 so that would make CR +6. And this same mindset can be used to solve #3.
There are no AI answers yet. The ability to request AI answers is coming soon!