2. Answer the following

ii. Give uses of KMnO4


Potassium permanganate (KMnO4) is a versatile chemical compound with several important uses, including:

  1. Oxidizing Agent: KMnO4 is a powerful oxidizing agent in various chemical reactions. It can be used to oxidize a wide range of organic and inorganic compounds. In laboratory settings, it’s commonly used for titrations to determine the concentration of reducing agents.

  2. Water Treatment: It is used in water treatment processes to remove iron and manganese ions, as well as for disinfection. It helps eliminate taste and odor problems in drinking water and is an effective way to control bacteria and algae growth in water supplies.

  3. Medical Applications: In medicine, it can be used as a topical disinfectant for cleaning wounds and treating certain skin conditions. It’s also used as an antidote in cases of poisoning by substances such as cyanide.

  4. Chemical Analysis: KMnO4 is used as a reagent in analytical chemistry for the determination of various substances, such as organic compounds and certain metals. It’s commonly used in redox titrations.

  5. Fire Starter: When mixed with glycerol or other flammable substances, it can be used as an emergency fire starter. The reaction between KMnO4 and glycerol generates heat and flame.

  6. Etching Agent: In laboratories, KMnO4 can be used to etch glass, and it is also used in the electronics industry for etching printed circuit boards.

  7. Decolorizing Agent: In the textile industry, KMnO4 is used to remove color from fabrics and to clean equipment.

  8. Wastewater Treatment: KMnO4 is employed in wastewater treatment plants to reduce the concentration of organic pollutants and control odors.

  9. Chemical Synthesis: It is used in the synthesis of various organic compounds and in the preparation of laboratory reagents.

It’s important to note that KMnO4 is a strong oxidizing agent and should be handled with care due to its potential to cause burns, stains, and other hazards. Always follow safety guidelines when working with potassium permanganate.