The starting material for convenient preparation of deuterated hydrogen peroxide (D2O2) in laborator — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

Peroxodisulphate, obtained by electrolytic oxidation of acidified sulphate solutions at high current density, on hydrolysis yields hydrogen peroxide. 2HSO4–(aq)       is Electrolys HO3SOOSO3H(aq)      Hydrolysis 2HSO4–(aq) + 2H+(aq) + H2O2(aq) This method is now used for the laboratory preparation of D2O2. K2S2O8 (s) + 2D2O (l)  2KDSO4 (aq) + D2O2 (l)