Question on: JAMB Chemistry - 2009
The oxidation state of Cr in K2Cr2O7 is
A
+7
B
+6
C
+5
D
4
Ask EduPadi AI for a detailed answer
Correct Option: B
Here's how to determine the oxidation state of Cr in K2Cr2O7:
1. **Assign known oxidation states:**
* Potassium (K) always has a +1 oxidation state.
* Oxygen (O) usually has a -2 oxidation state.
2. **Set up the equation:**
* The sum of the oxidation states in a neutral compound equals zero.
* Let 'x' be the oxidation state of Cr.
* The equation is: 2(+1) + 2(x) + 7(-2) = 0
3. **Solve for x:**
* 2 + 2x - 14 = 0
* 2x - 12 =
Add your answer
Please share this, thanks!
No responses