MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic Chemistryp -Block Elements (group 15-18)Previous Year Questions

Among the following, the correct formula of Marshall’s acid is (JIPMER 2018)

A.H2S2O6

B.H2S2O8✓ Correct

C.H2SO4

D.H2SO5

Explanation

The correct formula of Marshall’s acid is H2S2O8. It is known as peroxodisulphuric acid having sulphur (S) in +6 oxidation state. The structure of this acid is shown below:

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