CaOCl2 in aqueous solution changes to Cl2. What is the average oxidation state of Cl in CaOCl2?
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Solution
The oxidation number of chlorine in CaOCl2 (bleaching powder) In bleaching powder, Ca(OCl)Cl, the two Cl atoms are in different oxidation states i.e., one Cl– having oxidation number of –1 and the other as OCl– having oxidation number of +1.
Therefore, the average oxidation state of chlorine is 0.