Absorption

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Absorption:

1- It is an interior or bulk phenomenon.

2- The concentration of absorbed substance is uniform throughout the absorbing substance.

3- it is neither +ve or -ve, it is uniform.

4- It is a slow process because of diffusion.

5- The rate of absorption is uniform throughout.

Example: 

 Water is absorbed by anhydrous calcium chloride. Ammonia is absorbed by water. 

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