level: HYDROGEN PEROXIDE EXPERIMENT 1
Questions and Answers List
level questions: HYDROGEN PEROXIDE EXPERIMENT 1
| Question | Answer |
|---|---|
| Used to produce pure hydrogen peroxide | Starch |
| Hydrogen peroxide reaction with Barium Hydroxide | H2O2 + Ba(OH)2 → BaO2 + 2H2O precipitate - Barium Peroxide (BaO2) |
| Hydrogen peroxide reaction with Potassium Dichromate and Sulfuric Acid | K2Cr2O7 + 4H2SO4 + 3H2O2 → Cr2(SO4)3 + 3O2 + K2SO4 + 7H2O Produces Deep blue color - chromium (III) ions Chromium (III) Sulfate - Precipitate |
| Stabilizers: | • Colloidal stannate • Sodium pyrophosphate • Organophosphonates • Nitrate (for pH adjustment and corrosion inhibition) • Phosphoric acid (for pH adjustment) • Colloidal silicate (to minimize H2O2 decomposition in certain applications) |
| Why is adding stabilizers important in hydrogen peroxide? | minimize its decomposition under normal storage and handling conditions. |
| Uses of Hydrogen Peroxide | 1 Hair bleaching 2 Antiseptic 3 Mild disinfectant |