1996

peroxydisulphuric acid : H₂S₂O₈..
Adding one water molecule to it we will get 1 mole sulfuric acid H₂SO₄ and 1 mole peroxomonosulfuric acid H₂SO₅..this can be checked by writing the equation of the procees happening..

H₂S₂O₈ + H₂O → H₂SO₄ + H₂SO₅ ...

Govind's equation is right.
eure , ans given is wrong.

@Tushar ..where it's written 2 moles of caro's acid...it's just wriiten that it can produce caro's acid...and see the digram given on that page below this line..there is one mole of sulfuric acid and one mole of caro's acid...
Btw if u guys r wondering wat's Brett Lee...it's JD LEE

oh yeah my mistake ...sry [2]

I misunderstood the diagram

kk..thax everyone for contributions.