Surface Chemistry Class 12 – Notes, NCERT Solutions, Formulas & CBSE PYQs | Unit 5 Chemistry Guide
Surface Chemistry Class 12 – Notes, NCERT Solutions, Formulas & CBSE PYQs | Unit 5 Chemistry Guide Unit 5 – Surface Chemistry 5.1 Adsorption 5.2 Catalysis 5.3 Colloids 5.4 Classification of Colloids 5.5 Emulsions 5.6 Colloids Around Us 5.1 Adsorption Definition : Adsorption is the process by which atoms, ions, or molecules from a gas, liquid, or dissolved solid adhere to the surface of a solid or liquid (adsorbent), forming a film of the adsorbate on the surface . Types : Physical Adsorption (Physisorption) : Involves weak van der Waals forces; usually reversible. Chemical Adsorption (Chemisorption) : Involves stronger chemical bonds; often irreversible. Characteristics : Rapid in initial stages, slows as equilibrium is approached. Stronger with larger surface area of adsorbent. Influenced by temperature and pressure. Dye, gas, or pollutant removal often utilizes adsorption due to its high efficiency . Adsorbate : The substance bei...