Define physical and chemical adsorption.

1.	Define physical and chemical adsorption.
Answer» Physical adsorption:- When it particles of the adsorbate and held to the surface of the adsorbent by the weak forces such as Van der Waals force the adsorption is called physical adsorption of physisorption. Chemical adsorption:- When the molecular of the adsorbate are held to the surface of adsorbent by the chemical forces, the adsorption is called chemical adsorption. In case a chemical reaction occurs between the adsorbed molecules and the molecules or atoms of adsorbent. It is also known as chemisorption.

Answer»

Physical adsorption:- When it particles of the adsorbate and held to the surface of the adsorbent by the weak forces such as Van der Waals force the adsorption is called physical adsorption of physisorption.

Chemical adsorption:- When the molecular of the adsorbate are held to the surface of adsorbent by the chemical forces, the adsorption is called chemical adsorption. In case a chemical reaction occurs between the adsorbed molecules and the molecules or atoms of adsorbent. It is also known as chemisorption.

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