Question

$S-S$ bond is not present in:

• A. $H_2{S}_2{O}_4$
• B. $H_2{S}_2{O}_6$
• C. $H_2{S}_2{O}_8$
• D. none of these

Answer 1

Answer: (C)

(Hyposulphurous acid)

(Dithionic acid)

(Marshall's acid)
Thus S-S bond is not present in $H_2{S}_2{O}_8$ (Marshall's acid)