Hydrogen peroxide can be preapared bythe action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling 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 of ways namely normality , molarity , percentage strength and volume strength . Volume strength refers to the volume of O_(2) produced at N.T.P. by decomposition of 1 mL of H_(2)O_(2) solution. H_(2)O_(2) acts as an oxidising as well as reducing agent both in acidic and basic media. Hydrolysis of one mole of peroxodisulphuric acid produces

Hydrogen peroxide can be preapared bythe action of dil. H_(2)SO_(4) or

1.	Hydrogen peroxide can be preapared bythe action of dil. H_(2)SO_(4) or H_(3)PO_(4) on barium peroxide or by bubbling 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 of ways namely normality , molarity , percentage strength and volume strength . Volume strength refers to the volume of O_(2) produced at N.T.P. by decomposition of 1 mL of H_(2)O_(2) solution. H_(2)O_(2) acts as an oxidising as well as reducing agent both in acidic and basic media. Hydrolysis of one mole of peroxodisulphuric acid produces
Answer» two MOLES of sulphuric ACID two moles of peroxomonosulphuric acid one mole of sulphuric acid and one mole of peroxomonosulphuric acid one mole of sulphuric acid, one mole of peroxomonosulphuric acid and one mole of hydrogen peroxide Solution :`HO-underset("Peroxodisulpuric acid ")(S0_(2)-O-O-SO_(2))-OH+H_(2)O to underset("Sulphuric acid")(HOSO_(2)OH)+underset("Peroxomono-sulphuric acid")(HOOSO_(2)OH)`