Question

Which of the following process is not used in the concentration of $H_2{O}_2$?

• A. Distillation under reduced pressure
• B. Evaporation on a water bath
• C. Fractional crystallization
• D. Sublimation

Answer 1

Answer: (D)

Sublimation

Sublimation is not involved in concentration of $H_2{O}_2$.

Concentration of Hydrogen peroxide involves the following steps:

1. Evaporation of solution to obtain $30\%$ solution.

2. Distillation under pressure to get $90\%$ pure solution.

3. Fractional Distillation to get $100\%$ pure $H_2{O}_2$.