JEE Advanced Chemistry question

Which of the following has peroxy linkage?

(A)H2S2O3
(B)H2SO5Correct
(C)H2S2O7
(D)H2S4O6

Answer: (B)

Solution

H2SO5 (peroxymonosulphuric/Caro's acid) has the structure HO–O–SO2–OH, which contains one genuine peroxide (–O–O–) bond. H2S2O3 (thiosulphuric acid) has an S atom replacing an O of

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Question ID VK-159309