Properties of gases: gas laws, Kinetic theory of gases. Derivation of heat capacities (Cv and Cp) from the kinetic molecular theory of gases. Liquefaction of gases, Law of corresponding states and the critical point. Chemical thermodynamic systems, states, state function, and equilibrium state. First law of thermodynamics, Constant volume, constant pressure and the reversible process. Isothermal and adiabatic expansion of an ideal gas. Heat capacities and enthalpy dependence on temperature. Thermochemistry: Heat change involved in chemical reactions and Hess’s law. Second law of thermodynamics; entropy and disorder. Temperature dependence on entropy and the third law of thermodynamics. Gibbs (G) & Helhmoltz free energies, pressure dependence of G on ideal gases, relationship between G and the equilibrium constant K. Criteria for spontaneous reactions; Effect of equilibrium, one component systems. Phase rule - 2-component system. Practicals will include appropriate experiments on thermochemistry; first, second and third laws of thermodynamics.