Question

Write chemical equation for the preparation of ozone and its three oxidizing properties.

Hint:

Ozone is stronger than oxygen as an oxidizing agent due to the presence of weak oxygen-oxygen bonds.

Answer 1

Step 1: Preparation of Ozone.
Ozone is prepared by passing silent electric discharge through pure, dry oxygen. \[ 3O_2 \xrightarrow{electric\ discharge} 2O_3 \] Step 2: Oxidizing Properties of Ozone.
1.
Oxidation of Lead Sulphide: \[ PbS + O_3 \longrightarrow PbSO_4 \] 2.
Oxidation of Potassium Iodide: \[ 2KI + O_3 + H_2O \longrightarrow 2KOH + I_2 + O_2 \] 3.
Oxidation of Ferrous Salts: \[ 2Fe^{2+} + O_3 + 2H^+ \longrightarrow 2Fe^{3+} + O_2 + H_2O \] Conclusion:
Ozone is a powerful oxidizing agent and can oxidize sulphides, iodides, and ferrous salts effectively.