First slide

Hydrogen Peroxide

Question

$H_{2} O_{2}$ is manufactured these days

Moderate

A

By the action of $H_{2} O_{2}$ on ${BaO}_{2}$
B

By the action of $H_{2} {SO}_{4} on {Na}_{2} O_{2}$
C

By electrolysis of 50% $H_{2} {SO}_{4}$
D

By burning hydrogen in excess of oxygen

Solution

Electrolysis of 50% sulphuric acid gives peroxydisulphuric acid $(H_{2} S_{2} O_{8})$ which on distillation yields 30% solution of hydrogen peroxide.

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