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Chapter: 11th Chemistry : Physical and Chemical Equilibrium

Equilibrium involving dissolution of solids or gases in liquids

When you add sugar to water at a particular temperature, it dissolves to form sugar solution.

Equilibrium involving dissolution of solids or gases in liquids

 

Solid in liquids

When you add sugar to water at a particular temperature, it dissolves to form sugar solution. If you continue to add much sugar, you will reach a stage at which the added sugar remains as solid and the resulting solution is called a saturated solution. Here, as in the previous cases a dynamic equilibrium is established between the solute molecules in the solid phase and in the solution phase.


In this process     

Rate of dissolution  of solute = Rate of crystallisation of solute

 

Gas in liquids

When a gas dissolves in a liquid under a given pressure, there will be an equilibrium between gas molecules in the gaseous state and those dissolved in the liquid.

 

Example:

In carbonated beverages the following equilibrium exists.


Henry’s law is used to explain such gas-solution equilibrium processes.

 

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11th Chemistry : Physical and Chemical Equilibrium : Equilibrium involving dissolution of solids or gases in liquids |


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