Question
What is the oxidation state of Cr in each of the following compounds?
(a) CrO
(b) CrO3
(c) Cr2 O3
(a) CrO
(b) CrO3
(c) Cr2 O3
Answers
Dr. Jane
Oxygen is always -2
So for the first one Cr will be +2
Now can, you figure out the other two?
So for the first one Cr will be +2
Now can, you figure out the other two?
Amee
Could you give an example with a written equation?
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.
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?
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.
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.