Question

Which of the following methods can produce $H_2{O}_2$?

• A. Electrolysis of cold $50\%$ $H_{2}S{O}_4$ followed by the hydrolysis of distillate
• B. Acidification of barium peroxide and removal of excess water.
• C. By cyclic oxidation of 2-ethylanthraquinol followed by reduction of 2-ethylanthraquinone
• D. All of the above

Answer 1

The correct option is D

All of the above

Hydrogen peroxide was earlier synthesized by electrolysis of $50\%$ $H_{2}S{O}_4$ using high current density. This yields peroxosulphates, which on hydrolysis gives back $H_{2}S{O}_4$ and hydrogen peroxide.
Acidifying barium peroxide and removing excess water by evaporation under reduced pressure gives hydrogen peroxide (reaction media).
$H_2{O}_2$ is manufactured industrially by a cyclic process where 2-alkyl anthraquionol is oxidized reversibly to form the corresponding quinone and hydrogen peroxide. The peroxide is extracted as a $1\%$ solution. Then the anthraquinone is reduced back to anthraquinol via catalytic hydrogenation. This cycle is repeated.