a - write the preparation of h2O2
b - wht is 100volume H2O2
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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. If your hydrogen peroxide solution is 100 vol (quite reasonable for a strong stock solution) this means that 1000 cm3 of the H2O2 produces 100,000 cm3 of oxygen.
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