Question

The ratio of oxidation states of Cl in potassium chloride to that in potassium chlorate is:

• A. \(+\dfrac{1}{5}\)
• B. \(-\dfrac{1}{5}\)
• C. \(-\dfrac{2}{5}\)
• D. \(+\dfrac{3}{5}\)

Hint:

Always assign oxidation states using charge balance.

Answer 1

The Correct Option is B

Step 1: Oxidation state of Cl in KCl is \(-1\).
Step 2: Oxidation state of Cl in KClO\(_3\) is \(+5\).
Step 3: \[ \text{Ratio}=\frac{-1}{+5}=-\frac{1}{5} \]