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Q.What are the factors which affect the solubility ? Explain.

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Answer 1

Factors affecting solubility

TemperatureBasically, solubility increases with temperature

Polarity. In most cases solutes dissolve in solvents that have a similar polarity.

PressureSolid and liquid solutes

Molecular sizeStirring increases the speed of dissolving.

Answer 2

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$\huge{Liquids}$

$\largee{Temperature:-}$

By changing the temperature we can increase the soluble property of a solute. Generally, water dissolves solutes at 20∘C or 100∘C.. Sparingly soluble solid or liquid substances can be dissolved completely by increasing the temperature. But in the case of gaseous substance, temperature inversely influences solubility i.e. as the temperature increases gases expand and escapes from their solvent.

$\largee{Forces\:and\:bonds:-}$

Like dissolves in like. The type of intermolecular forces and bonds vary among each molecule. The chances of solubility between two unlike substances are more challengeable than the like substances. For example, water is a polar solvent where a polar solute like ethanol is easily soluble.

$\largee{Pressure:-}$

Gaseous substances are much influenced than solids and liquids by pressure. When the partial pressure of gas increases, the chance of its solubility is also increased. A soda bottle is an example of where CO2 is bottled under high pressure.

$\huge{Solids}$

$\largee{Temperature:-}$

Apart from the nature of solute and solvent, temperature also affects solid solubility considerably. If the dissolution process is endothermic then the solubility should increase with an increase in temperature in accordance with Le Chateliers Principle. If the dissolution process is exothermic the solid solubility should decrease.

$\largee{Pressure:-}$

Solid solubility hardly gets affected by changes in pressure. This is due to the fact that solids and liquids are highly incompressible and practically do not get affected by changes in pressure.