Surface Chemistry – Class 12 Chemistry Notes | Full NCERT Summary
🔬 Chapter 5: Surface Chemistry – Class 12 Chemistry --- 🔹 What is Surface Chemistry? Deals with phenomena occurring at the interface between two phases: solid-liquid, solid-gas, or liquid-gas. Important in adsorption, catalysis, and colloidal systems. --- 🔹 Adsorption Definition: Accumulation of molecules on the surface of a solid or liquid. Types: 1. Physisorption – Weak Van der Waals forces, reversible. 2. Chemisorption – Strong chemical bonds, irreversible. 📌 Important Diagram: Graph between temperature and extent of adsorption --- 🔹 Adsorption Isotherms Freundlich Adsorption Isotherm: x/m = kP^{1/n} = mass of adsorbate = mass of adsorbent = pressure 📌 Diagram: Freundlich isotherm plot --- 🔹 Catalysis Catalyst: A substance that alters the rate of a reaction without being consumed. Types of Catalysis: 1. Homogeneous Catalysis – Reactants and catalyst in the same phase. 2. Heterogeneous Catalysis – Catalyst in a different phase. 📌 Diagram: Energy profile...