What is the oxidation state of #Cl# in #HClO_3#?

1 Answer
anor277
Jan 21, 2018

In #"chloric acid..."#we got #Cl^(+V)#...

Explanation:

The sum of the oxidation numbers equals the charge on the ion or parent species. And since chloric acid is a neutral molecule, the sum of the individual oxidation numbers is ZERO.....

Hydrogen, generally, takes a #+I# oxidation number, and oxygen, generally, takes a #-II# oxidation number, and it does in this scenario.... And so...

#0=underbrace(Cl)_"oxidation number"+3xx(-II)+I#

It does not take too much algebra to realize that...

#underbrace(Cl)_"oxidation number"=+V....#

What is the oxidation number of chlorine in #"perchloric acid"#, #HClO_4#?

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