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Physical Chemical Properties of Hydrogen
The physicochemical properties of hydrogen are described in
Hydrogen is a colorless and odorless gas. It is light in weight and has the least density among all gases. Under normal conditions, it is extremely insoluble in water, only slightly soluble.
From the perspective of physical properties, hydrogen has a very low boiling point and melting point. The boiling point is about -252.87 ° C, and the melting point is about -259.14 ° C. This property causes it to be gaseous at room temperature and pressure. If it is to be liquefied or solidified, it needs to be at an extremely low temperature.
When it comes to chemical properties, hydrogen is highly reactive. Under appropriate conditions, it can react with various substances. First, hydrogen is mixed with oxygen, and when exposed to an open flame or energy source, it burns rapidly to produce water, which releases a huge amount of heat energy. The chemical equation is: 2H ³ + O ³ $\ stackrel {ignited }{=\!=\!=}$ 2H ³ O. Furthermore, hydrogen can be used as a reducing agent to react with metal oxides under high temperature conditions to capture the oxygen and reduce the metal. For example, hydrogen and copper oxide are heated together, and copper oxide is reduced to metal copper, and water is generated at the same time. The reaction formula is: H ³ + CuO $\ stackrel {\ Delta }{=\!=\!=}$ Cu + H ³ O. The physicochemical properties of hydrogen make it widely used in many fields. Because the combustion product is only water, it is clean and pollution-free, so it is a promising clean energy source. In the industrial field, it is also often used as a reducing agent in metal smelting and other processes.
Hydrogen is a colorless and odorless gas. It is light in weight and has the least density among all gases. Under normal conditions, it is extremely insoluble in water, only slightly soluble.
From the perspective of physical properties, hydrogen has a very low boiling point and melting point. The boiling point is about -252.87 ° C, and the melting point is about -259.14 ° C. This property causes it to be gaseous at room temperature and pressure. If it is to be liquefied or solidified, it needs to be at an extremely low temperature.
When it comes to chemical properties, hydrogen is highly reactive. Under appropriate conditions, it can react with various substances. First, hydrogen is mixed with oxygen, and when exposed to an open flame or energy source, it burns rapidly to produce water, which releases a huge amount of heat energy. The chemical equation is: 2H ³ + O ³ $\ stackrel {ignited }{=\!=\!=}$ 2H ³ O. Furthermore, hydrogen can be used as a reducing agent to react with metal oxides under high temperature conditions to capture the oxygen and reduce the metal. For example, hydrogen and copper oxide are heated together, and copper oxide is reduced to metal copper, and water is generated at the same time. The reaction formula is: H ³ + CuO $\ stackrel {\ Delta }{=\!=\!=}$ Cu + H ³ O. The physicochemical properties of hydrogen make it widely used in many fields. Because the combustion product is only water, it is clean and pollution-free, so it is a promising clean energy source. In the industrial field, it is also often used as a reducing agent in metal smelting and other processes.
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