The oxidation numbers of the sulphur atoms in pcroxy- monosulphuric acid `(H_(2)SO_(5))` and peroxydisulphuric acid `(H_(2)S_(2)O_(8))` are respectively.

Options

A. `+8` and +7
B. `+3` and +4
C. `+6` and +6
D. `+4` and +6

Answer

C

Explanation

`H_(2)SO_(3) `(Peroxomonosulphuric acid)

`=2 xx (+1) x + 3(-2) + 2(-1) =0`
`2 +x -6-2 =0`
`x = +6`
`H_(2)S_(2)O_(3)` (peroxodisulphuric acid)
`HO - overset(O)overset(||)underset(O)underset(||)S - O - O overset(O)overset(||)underset(O)underset(||)S - OH, S (+VI)`
The oxidation number of these two oxygen atoms will be -cach because it contains peroxide linkage
`2+2x -12 -2 =0`
`2x = 12`
`x= +6`