PLEASE EXPLAIN PREPARATION OF HYDROGEN PEROXIDE BY ELECTROLYTIC METHOD
H2O2 can be prepared by the electrolysis of 50% H2SO4solution. In a cell, peroxy disulphuric acid is formed at the anode.
2H2SO4 ? H2S2O8 (aq.) + H2(g)
Electrolysis Peroxy disulphuric acid
This is drawn off from the cell and hydrolysed with water to give H2O2.
H2S2O8 + 2H2O ? 2H2SO4 + H2O2 The resulting solution is distilled under reduced pressure when H2O2 gets distilled while H2SO4 with high boiling point, remains undistilled.