This chemical reaction is a redox reaction, in which carbon (C) is a reducing agent and oxygen (O2) is an oxidizing agent. When carbon reacts with oxygen, carbon atoms change from the outermost two electrons to eight electrons, forming carbon dioxide (CO2). In this process, the oxygen atom in the oxygen molecule changes from the outermost six electrons to eight electrons, releasing energy. This energy is used to form carbon dioxide molecules.
If there is too much oxygen, carbon and carbon dioxide will further react to produce carbon monoxide (CO), which is also a redox reaction.
This chemical reaction has many applications in real life, for example, in the iron and steel industry, different kinds of steel are made by controlling the oxygen-carbon ratio; In the laboratory, the combustion efficiency of a substance can be determined by measuring the amount of carbon dioxide released.
If oxygen is insufficient or the ambient temperature is too high, carbon may not be completely burned to produce carbon monoxide (CO) or other hydrocarbons. Therefore, we should pay attention to safety and environmental protection when burning carbon.
The application of chemistry in life;
Chemistry plays an important role in food and nutrition. For example, the pasta we eat every day, such as bread, biscuits, steamed bread, as well as meat, beans, vegetables, fruits and other foods, all use chemical reactions in the production process. These chemical reactions make food more delicious and easier to digest. At the same time, chemistry also plays a role in prolonging the shelf life of food in the production of food additives and preservatives.
Chemistry is also widely used in medicine and pharmacy. Many drugs and medical devices are made by chemical reactions. Chemical reactions can help us to make drugs to treat diseases, such as antibiotics, anticancer drugs and vaccines. In addition, chemistry also plays an important role in DNA detection and gene therapy.
Chemistry also has important applications in environmental protection. Chemical reaction can help us to treat and recycle wastes, such as sewage, waste gas and waste residue. At the same time, chemistry can also help us develop more environmentally friendly materials, such as degradable plastics and green energy.
Chemistry is also widely used in materials science and engineering. For example, chemistry can help us develop lighter and more durable materials, such as titanium alloys, polymers and composites. These materials are widely used in construction, aerospace, automobile and other fields.