The metal burns in chlorine gas
The chloride of the metal can be obtained by burning the metal in chlorine gas, for example, the sodium metal is burned in chlorine gas to form sodium chloride, which belongs to the redox reaction.
Reactive metals react with hydrochloric acid
Some reactive metals react with hydrochloric acid solution, and chloride of the metal can also be formed, which belongs to redox reaction. However, it should be noted that not all metals can react with hydrochloric acid to form salts, and only metals ranked before hydrogen in the list of metal activity can react with hydrochloric acid to form chloride and hydrogen, such as magnesium, aluminum, calcium, potassium, iron, zinc, etc., while gold, platinum and other less active metals ranked after hydrogen in the metal activity order table cannot react with hydrochloric acid to form chloride. Metals such as potassium, calcium, sodium, etc., react directly with hydrochloric acid.
In addition, chloride can also be obtained by reacting with hydrochloric acid such as oxides, carbonates, hydroxides, etc.
