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A salt is an ionic compound. A salt can be produced from a neutralization reaction between an acid and an alkali (base). This is a common method used in the laboratory to prepare salt. In addition, salt also dissolves in water. The solubility of various types of salt in water will be studied through experiments. However, salt is divided into two types, namely dissolved salt and insoluble salt. Dissolved salts are salts that dissolve in water. The salts involved are ammonium, sodium, and potassium. This salt involves a method of neutralization between acids and alkalis while non-ammonium, sodium, and potassium salts will react between reactive metals, metal oxides, and metal carbonates. Besides, the salt is insoluble. This salt uses a double decomposition reaction method which is a precipitation reaction. in this process, two salt solutions containing insoluble salt ions are needed. Therefore, the selection of the preparation method for a certain salt depends on the solubility of the salt in water and the type of salt prepared.