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Hydrogen peroxide can be preapared by the 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 producesA. two moles of sulphuric acidB. two moles of peroxomonosulphuric acidC. one mole of sulphuric acid and one mole of peroxomonosulphuric acidD. one mole of sulphuric acid, one mole of peroxomonosulphuric acid and one mole of hydrogen peroxide |
Answer» Correct Answer - c `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)` |
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