The oxidation state of sulphur in Caro.s and Marshel.s acids are:

Options

A. `S^(6+), 5^(6+)`
B. `S^(6+), S^(7+)`
C. ` S^(6+), S^(5+)`
D. ` S^(6+), S^(6-)`

Answer

A

Explanation

`H_2SO_5` (Caro.s acid)
`overset(-1)(HO)-overset(-2)overset(O)overset(||)underset(-2)underset(O)underset(||)S-overset(1)o-overset(-1)O-overset(+1)H" "+6`
`H_2S_2O_8` (Marshaall.s acid)
`HO-overset(O)overset(||)underset(O)underset(||)S-O-O-overset(O)overset(||)underset(O)underset(||)S-OH" "+6`