Hydrogen peroxide can be prepared by the action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling carbon dioxide through a thin paste of barium peroxide. On an industrial scale , it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% H_(2)SO_(4) or an equimolar mixture of H_(2)SO_(4) and ammonium sulphate .The strength of H_(2)O_(2) solution can be expressed in a number ways namely normality , molarity , percentage strength and volume of O_(2) produced at N.T.P by decomposition of 1 mL of H_(2)O_(2) acts as an oxidising as well a reducing agent both in acidic and basic media. The volume of 10 volume H_(2)O_(2) solution that decolourises 200 ml of 2N KMnO_(4) solution in acidic medium is

Hydrogen peroxide can be prepared by the action of dil. H_(2)SO_(4) or

1.	Hydrogen peroxide can be prepared by the action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling carbon dioxide through a thin paste of barium peroxide. On an industrial scale , it can be prepared by hydrolysis of peroxodisulphuric acid obtained by electrolysis of 50% H_(2)SO_(4) or an equimolar mixture of H_(2)SO_(4) and ammonium sulphate .The strength of H_(2)O_(2) solution can be expressed in a number ways namely normality , molarity , percentage strength and volume of O_(2) produced at N.T.P by decomposition of 1 mL of H_(2)O_(2) acts as an oxidising as well a reducing agent both in acidic and basic media. The volume of 10 volume H_(2)O_(2) solution that decolourises 200 ml of 2N KMnO_(4) solution in acidic medium is
Answer» 112 ml 336 ml 200 ml 224 ml Answer :D