What is O3 in the air? In the smog weather forecast, there are pM2.5, pM 10, SO2 and so on. , where 03 is what?

Ozone is an allotrope of oxygen with a molecular formula of 47.998. It is a light blue gas with fishy smell. Ozone is very oxidizing, stronger than oxygen. It can undergo oxidation reaction at a lower temperature, such as oxidizing silver into silver peroxide, oxidizing lead sulfide into lead sulfate, and reacting with potassium iodide to generate iodine.

Strong oxidation

Ozone can discolor most organic pigments. It can slowly corrode rubber and cork and make organic unsaturated compounds oxidized. Commonly used in: disinfection and sterilization of beverages, air purification, bleaching, disinfection of water treatment and drinking water, mildew and eggs killing in granaries.

When it reacts with organic unsaturated substances, it will produce smelly oxides. These ozonides can be decomposed in the presence of water, and the original unsaturated bonds are opened to generate aldehydes, ketones and carboxylic acids. Because of the decomposition of ozone, it can be used as a synthetic method and determine the structure of organic matter.

Ozone is one of the strongest oxidants in nature because of its strong oxidation and sterilization, and its redox potential is second only to fluorine in water. At the same time, the product of ozone reaction is oxygen, so ozone is an efficient oxidant without secondary pollution.