Experiment F1 Fundamentals of Chemistry Experiment F2 The Preparation of Aspirin Experiment F3 Determination of Soil Salinity Experiment F4 Calorimetry Experiment F5 Chemical Equilibrium Experiment F6: Analytical of an Aspirin Tablet Le Chatelier's Principle and Chemical Equilibrium Shifts Using Le Chatelier's Principle and Chemical Equilibrium Shifts Beer-Lambert Law of Spectroscopy About Absorbance Spectra and Measuring Colour Equilibrium Constant Using Equilibrium Constant Experiment F5 Chemical Equilibrium Chemical equilibrium is a state in which the rate of the forward reaction equals the rate of the backward reaction. In other words, there is no net change in concentrations of reactants and products.