Description

Chart Preparation Of Oxygen

This chart will illustrate two common methods for preparing oxygen gas (O2) in a laboratory setting.

Content:

Method 1: Decomposition of Hydrogen Peroxide

1. Preparation:

   • Label “Hydrogen Peroxide (H2O2)”
   • Briefly mentions using a dilute solution (e.g., 3%)

2. Catalyst:

   • Label “Manganese Dioxide (MnO2)” (catalyst)

3. Reaction Vessel:

   • Label “Flask” with MnO2 placed inside.

4. Gas Evolution:

   • Arrow pointing upwards from the flask labeled “Oxygen Gas (O2)”

5. Collection:

   •  Label “Water Displacement” with a trough filled with water and an inverted test tube collecting gas.

Method 2: Decomposition of Potassium Chlorate

1. Preparation:

   • Label “Potassium Chlorate (KClO3)”

2. Heating:

   •  Label “Test Tube (Δ)” with a heating mantle symbol (Δ)

3. Evolution and Decomposition:

   • Arrow pointing upwards from the test tube labeled “Oxygen Gas (O2) & Potassium Chloride (KCl)”

4. Collection:

   • Similar to Method 1, with water displacement and gas collection in a test tube.

Bottom Section (Optional):

• Briefly explains the decomposition reaction of hydrogen peroxide (2 H2O2 -> 2 H2O + O2) for Method 1.
• Explains the decomposition reaction of potassium chlorate (2 KClO3 -> 2 KCl + 3 O2) for Method 2.
• Mentions the importance of using a catalyst (MnO2) in Method 1 to speed up the reaction.
• Briefly discuss the safety precautions when working with potassium chlorate due to its oxidizing properties.

Additional Considerations:

• Uses clear arrows to show the flow of materials and gases.
•  color-coding the gas streams (e.g., blue for O2).

Customization:

This is a basic layout for your 75x100cm chart.

• Chemical formulas for all the reactants and products in the reactions.
• Different methods for collecting oxygen gas (e.g., using a gas syringe).
• Information about the physical properties of oxygen gas.