Question

In which of the following acid peroxy linkage is present?

• A. $H_{2}S{O}_3$
• B. $H_{2}S{O}_4$
• C. $H_{2}C{O}_4$
• D. $H_2{S}_2{O}_8$

Answer 1

Answer: (C), (D)

The correct options are
C $H_{2}C{O}_4$
D $H_2{S}_2{O}_8$

$H-O-\stackrel{O}{\stackrel{||}{C}}-O-O-H$

$H-O-O-\underset{O}{\underset{||}{\stackrel{O}{\stackrel{||}{S}}}}-\underset{O}{\underset{||}{\stackrel{O}{\stackrel{||}{S}}}}-O-O-H$

From the figure you can observe peroxy linkage for $H_{2}C{O}_4$ and $H_2{S}_2{O}_8$.
Hence, option $C$ and $D$ are correct.