The oxidation state of chlorine in potassium chlorate is?
A
+1
B
+2
C
+3
D
+5
E
+7
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
- potassium chlorate --> KClO\(_3\)
valencies of K = +1, O = -2.
: (+1) + Cl + ( -2 X 3 atoms ) = 0
Cl + 1 - 6 = 0
Cl = 5
∴ The oxidation state of chlorine in potassium chlorate is +5
Source: Myschool Past Questions Archive (Record #39)