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The majority of the substances are soluble in water. That is why water is referred to as a "Universal solvent."
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Universal solvent
However, some substances do not dissolve in water. As a result, other solvents, such as ethers, benzene, and alcohols, are used to prepare a solution by dissolving the substances.
![homo.jpg](https://resources.cdn.yaclass.in/5b6682fc-645d-414e-a1a2-5afc1501686d/homow300.jpg)
Some substances do not dissolve in water
Based on the type of solvent used solutions are classified into two types:
- Aqueous solutions
- Non-aqueous solutions
Aqueous solutions:
The aqueous solution is a solution in which water acts as a solvent.
Example:
Common salt in water, sugar in water, copper sulphate in water, and so on.
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Dissolving salt in water
Here in the above examples, the solvent is water, and the solute is common salt, sugar, copper sulphate, etc.
Non-aqueous solutions:
The non-aqueous solution is a solution in which any liquid other than water acts as a solvent.
Example:
Iodine dissolved in carbon tetrachloride, sulphur dissolved in carbon disulphide, etc.
![shutterstock_1582986439.jpg](https://resources.cdn.yaclass.in/81d6e349-ca92-49cf-be79-a32ade96920f/shutterstock1582986439w300.jpg)
Iodine does not dissolve in an aqueous solution
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Iodine dissolved in non-aqueous solution
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(a) Sulphur dissolved in \(CS_2\)
(b) Sulphur insoluble in water
(b) Sulphur insoluble in water
Sulphur dissolved in carbon disulphide: The solvent is carbon disulphide, and the solute is sulphur.