Question

In Merck’s method, \( \mathrm{H_2O_2} \) is obtained from

• A. \( \mathrm{BaO_2 + H_2SO_4} \)
• B. \( \mathrm{Na_2O_2 + H_2SO_4} \)
• C. \( \mathrm{BaO_2 + H_3PO_4} \)
• D. \( \mathrm{BaO_2 + H_2O + CO_2} \)

Hint:

Merck’s method specifically uses sodium peroxide for the preparation of hydrogen peroxide.

Answer 1

The Correct Option is B

Step 1: Understanding Merck’s method.
Merck’s method is a laboratory method for the preparation of hydrogen peroxide.

Step 2: Reaction involved.
In this method, sodium peroxide reacts with dilute sulphuric acid to form hydrogen peroxide.

Step 3: Eliminating incorrect options.
Barium peroxide methods involve different acids and conditions, not Merck’s method.

Step 4: Conclusion.
Thus, hydrogen peroxide is obtained from sodium peroxide and sulphuric acid.