The basic concepts of analytical chemistry, the main reactions and equilibrium in analytical chemistry and the main classes of physicochemical methods of analysis. are considered. The collection contains the theoretical part, examples of solving typical problems, problems for independent solution, as well as questions for controlling the development of the topic. Designed to develop and consolidate the skills of solving problems in analytical chemistry and physicochemical methods of analysis. The manual is aimed primarily at students of the Department of Environmental Engineering in the specialties "Ecology and Environmental Management" and "Engineering Environmental Protection" . Can be used by students and undergraduates of other technical specialties to gain computational skills in analytical chemistry.