Classification of analytical methods. Tools of analytical chemistry: terminology, apparatus, chemicals and statistics. Sampling and sample treatment.  Data and data treatment: error, accuracy, certainty, variation range, confidence interval, Aqueous chemical equilibrium: acids, bases, buffer solutions, complex solutions. Classical or wet chemical methods of analysis: elemental, gravimetric and titrimetric methods (neutralization and complexometry titrations). Introduction to electrochemistry: redox equlibria and redox titrations.