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
Correct Answer: C
Solution :
\[\underset{({{H}_{2}}{{S}_{2}}{{O}_{4}})}{\mathop{H-O-\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{S}}\,-\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{S}}\,-O-H}}\,\] (Hyposulphurous acid) \[\underset{({{H}_{2}}{{S}_{2}}{{O}_{6}})}{\mathop{H-O-\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\mathop{S}}\,}}\,-\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\mathop{S}}\,}}\,-O-H}}\,\] (Dithionic add) \[\underset{({{H}_{2}}{{S}_{2}}{{O}_{8}})}{\mathop{H-O-\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{S}}}\,-O-O-\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{S}}}\,-O-H}}\,\] (Marshalls acid) Thus\[S-S\]bond is not present in \[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] (Marshalls acid)
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