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Hydrogen — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrogen1 Mark
MCQ
Which of the following process is not used in the concentration of $\ce{H_2​O_2}$​?
  • A
    Distillation under reduced pressure
  • B
    Evaporation on a water bath
  • C
    Fractional crystallization
  • ✓
    Sublimation
✓

Answer

Correct option: D.
Sublimation
Sublimation is not involved in concentration of $\ce{H_2O_2}$​.
Concentration of Hydrogen peroxide involves the following steps:
  • Evaporation of solution to obtain $30\%$ solution.
  • Distillation under pressure to get $90\%$ pure solution.
  • Fractional Distillation to get $100\%$ pure $\ce{H_2O_2}$​

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