What is meant by hydrated salt explain with example?

Question

Answer

Crystalline salt molecule which is attached loosely with molecules of water is known as hydrated salt

Answer

When a salt, such as sodium chloride, dissolves in water, the sodium and chloride ions undergo hydration. Each individual ion is surrounded by water molecules. The water molecules are polar, with a slight excess of negative charge on oxygen and a slight excess of positive charge on the hydrogens.

Answer

Hydrated Salt

Hydrated salt refers to a salt that contains water molecules within its crystal structure. These water molecules are known as water of crystallization. When a salt crystallizes from a solution containing water, it may incorporate water molecules into its crystal lattice, forming a hydrated salt.

Example

One common example of a hydrated salt is copper (II) sulfate pentahydrate, which has the chemical formula CuSO4.5H2O. In this compound, there are five water molecules for every one copper sulfate molecule. The water molecules are tightly bound within the crystal structure of the salt.

Explanation

When hydrated salts are heated, the water of crystallization is released as water vapor, leaving behind the anhydrous form of the salt. This process is known as dehydration. For example, when copper (II) sulfate pentahydrate is heated, it loses its water molecules and forms anhydrous copper (II) sulfate.

Significance

The presence of water molecules within the crystal lattice of a salt can affect its physical properties such as color, solubility, and stability. Hydrated salts are often used in chemical synthesis, analytical chemistry, and as drying agents due to their ability to absorb water from the environment.

Conclusion

In summary, hydrated salts are salts that contain water molecules within their crystal structure. Understanding the concept of hydrated salts is essential in various fields of chemistry and has practical applications in industries such as pharmaceuticals, agriculture, and materials science.

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