In the classical electrolytic preparation of Hydrogen Peroxide, a 50% solution of Sulphuric acid () β Hydrogen Chemistry Question
Question
In the classical electrolytic preparation of Hydrogen Peroxide, a 50% solution of Sulphuric acid ($H_2SO_4$) undergoes electrolysis. What specific intermediate compound is generated at the anode, which must subsequently be distilled and hydrolyzed to finally yield $H_2O_2$?
Answer: B
π‘ Solution & Explanation
During the electrolysis of $50\% H_2SO_4$ at low temperatures, bisulphate ions ($HSO_4^-$) oxidize and dimerize at the anode to form Peroxodisulphuric acid ($H_2S_2O_8$). This intermediate is then extracted and hydrolyzed with water to produce $H_2SO_4$ and $H_2O_2$.
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