Perdisulphuric acid (H2S2O8) can be prepared by the electrolytic oxidation of H2SO4
2H2SO4 → H2S2O8 + 2H+ + 2e
Oxygen and hydrogen are by products. In such an electrolysis 9.72 litres of H2 and 2.35 litres of O2 were generated at STP. The wt of perdisulphuric acid formed is
1
43.456 g
2
4.3456 g
3
434.56 g
4
None of these