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Instant Fire. Potassium chlorate, KClO 3, is a white, crystalline or powdery solid which is a very good oxidizing agent; it is used in explosives, fireworks, matches, etc. When it decomposes under heating (especially in the presence of a manganese catalyst), it releases molecular oxygen, O 2 : 2KClO 3 (s) â.
Introduction: In this experiment you will determine the percentage of oxygen in potassium chlorate. You will calculate the theoretical value from the chemical formula and compare your experimental value to the theoretical value.Background: When potassium chlorate (KClO. 3) is heated, it undergoes chemical decomposition. Oxygen gas (O 2) is given off and potassium chloride (KCl) remains as the residue.ou will calculate the theoretical value from the chemical formula and compare your experimental value to the theoretical value. Background: When potassium chlorate (KClO. 3) is heated, it undergoes chemical decomposition. Oxygen gas (O 2) is given off and potassium chloride (KCl) remains as the residue.