The laboratory method for the preparation of H2O2 is by

The laboratory method for the preparation of $H_{2} O_{2}$ is by

A
$H_{2} {SO}_{4}$
B
${NH}_{4} {HSO}_{4}$
C
${Na}_{2} O_{2} + H_{2} {SO}_{4} (dil.)$
D
All the above

Solution:

In laboratory $H_{2} O_{2}$ is prepared as below by Merck's process

${Na}_{2} O_{2} + H_{2} {SO}_{4} ⟶ {Na}_{2} {SO}_{4} + \underset{\begin{array}{l} Hy Odrogen \\ progide \end{array}}{H_{2} O_{2}}$

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