Question

how will you prepare H2O2 in labortary pls hlp fast pls tommorow is board exam​

Answer 1

From barium peroxide-Laboratory method of preparation. Hydrogen peroxide is prepared from barium peroxide by the following methods: (a) By the action of dilute sulphuric acid. Apaste of hydrated barium peroxide (BaO2.8H2O) is prepared in ice – cold water and then added slowly to an ice-cold solution of 20% H2SO4.

Answer 2

Hydrogen peroxide is prepared by Merck's process. In this method calculated quantities of sodium peroxide to ice cold dilute 20% solution of sulphuric acid. 30% of hydrogen peroxide is obtained by this process. Hydrogen peroxide is manufactured by the electrolysis of 50% sulphuric acid followed by vacuum distillation.