Production of Ozone and the Simple Detection using Potassium Iodide Titration Method

Ozone is a molecule consisting of three oxygen atoms (O₃) and a powerful oxidizing agent that can also act as a non-chemical disinfectant. Ozone can be detected using potassium iodide and titrated using sodium thiosulfate to know the concentration. The purpose of this study is to know the output of ozone concentration from the ozone generator. Ozone measurement was done by making KI solutions and the concentration are 0,2; 0,4; 0,6; 0,8; and 1 M then flew by ozone for 2 minutes with flow rate 1 L/min and the color of the solution will change from clear to brown. The brown solution titrated using Na₂S₂O₃ 0,4M solution, until the color of the KI solution becomes clear again. In conclusion, potassium iodide (KI) can detect the output of ozone generator which means potassium iodide (KI) concentrations linier with ozone concentration.