Tec — The Education Consultancy

Topics covered

• Reversible and irreversible reactions, and dynamic equilibrium — how forward and reverse reaction rates become equal
• Macroscopic characteristics of forward and reverse reactions, and of a system at dynamic equilibrium
• The law of mass action and the derivation of the equilibrium constant (Kc) expression for a general reaction aA + bB ⇌ cC + dD
• Equilibrium constant expressions for specific reversible reactions, and how to determine the units of Kc
• Characteristics and importance of the equilibrium constant
• The reaction quotient (Qc), and comparing Qc with Kc to predict the direction of a reaction
• Using the magnitude of Kc to judge the extent of a reaction (small, large, or moderate Kc)
• Numerical problems: calculating Kc from equilibrium concentrations, and finding an unknown equilibrium concentration