A) S-S bond is present in \[{{H}_{2}}{{S}_{2}}{{O}_{6}}\].
B) In peroxosulphuric acid \[({{H}_{2}}S{{O}_{5}})\] sulphur is in \[+8\] oxidation state.
C) Copper powder along with \[A{{l}_{2}}{{O}_{3}}\] and \[{{K}_{2}}O\] is used as a catalyst in the preparation of \[N{{H}_{3}}\] by Haber's process.
D) Change in enthalpy is positive for the preparation of\[S{{O}_{3}}\] by catalytic oxidation of\[S{{O}_{2}}\].
Correct Answer: A
Solution :
\[H-O-\underset{\begin{smallmatrix} \,|| \\ O \end{smallmatrix}}{\overset{\begin{smallmatrix} O \\ \,|| \end{smallmatrix}}{\mathop{S}}}\,-\underset{\begin{smallmatrix} \,|| \\ O \end{smallmatrix}}{\overset{\begin{smallmatrix} O \\ \,|| \end{smallmatrix}}{\mathop{S}}}\,-O-H\] In \[{{H}_{2}}S{{O}_{3}}\] the oxidation number of O is +6 as two O are having peroxide bond
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