Question

One of the methods for the manufacture of $H_2{O}_2$ involves the auto-oxidation of:

• A. 2- ehtylanthraquinol
• B. hydrated barium peroxide
• C. an alkali solution
• D. 50% $H_{2}S{O}_4$

Answer 1

Answer: (A)

2- ehtylanthraquinol

Hydrogen peroxide can be obtained by the auto-oxidation of 2-ethyl anthraquinol.

2-Ethylanthraquinol $\rightleftharpoons$ oxidized product $+H_2{O}_2$

The reduced product is dissolved in a mixture of benzene and cyclohexanol and when air is passed through this, it is oxidised back to 2-Ethylanthraquinone and hydrogen peroxide is also produced along with.

This process is very cheap because 2-Ethylanthraquinone can be used again and again.