Soul of Chemistry

Notes on Chemical Equilibrium for BSc      Based on the fact that whether a chemical reaction would go for completion or not, the chemical reaction can be divided into two categories. 1. Irreversible reaction:  In these reactions the reactants are completely converted into products and the products formed donot react to give back the reactants. Precipitation or ionic, neutralisation, redox, combustion and decomposition reactions come under this category. 2. Reversible reaction: These reactions take place in both the directions under similar conditions of temperature and pressure. Example:  1. N2 (g) + 3H2 (g)    ⇌    2NH3 (g) 2. 3Fe (s) + 4 H2O (g)  ⇌  Fe3O4 (s) + 4 H2 (g) Characteristics of reversible reaction: 1. Proceed in both directions, the forward and backward. 2. Take place in closed vessel. 3. Reactants and products are separated by double arrow ( ⇌ ) 4. Never proceed to completion 5. An equilibrium is established at ...