Question

find the oxidation no of HSO-3 in S​

Answer 1

Explanation:

Let the oxidation number of S be x in HSO3− ion.

We know that, Ox. no. of H=+1

Ox. no. of O=−2

So, Ox. no. H+ Ox. no. S + 3(Ox. no. O)=−1

+1+x+3(−2)=−1

or +1+x−6=−1

or x−5=−1

or x=+5−1=+4

The oxidation number of S in HSO3− ion is +4.