Which of the following is not a peroxo acid?

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Question

(C) peroxo acid is an acid that contains an $-O-O-$ (peroxide) linkage.$CF_3CO_3H$ (Peroxytrifluoroacetic acid) contains a $-O-O-$ linkage.$H_2S_2O_8$

Vedclass · Accepted Answer

$H_2S_2O_7$

Vedclass · Answer

(C) peroxo acid is an acid that contains an $-O-O-$ (peroxide) linkage.$CF_3CO_3H$ (Peroxytrifluoroacetic acid) contains a $-O-O-$ linkage.$H_2S_2O_8$ (Peroxodisulfuric acid) contains an $-O-O-$ linkage.$H_2SO_5$ (Peroxomonosulfuric acid or Caro's acid) contains an $-O-O-$ linkage.$H_2S_2O_7$ (Pyrosulfuric acid or Oleum) has the structure $HO-SO_2-O-SO_2-OH$,which contains an $-O-$ (oxo) linkage but no $-O-O-$ (peroxo) linkage.Therefore,$H_2S_2O_7$ is not a peroxo acid.

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