Analytical Chemistry B Laboratory 1200-1CHANALBL3
Classical methods of quantitative analysis are widely used in practice in many analytical laboratories, including those related to environmental protection and water hardness testing.
During laboratory classes, all students perform analyses individually. They are responsible for proper time management and are required to present a description of the experiment along with calculations. They acquire skills in performing quantitative analyses based on acid–base, precipitation, complexation, and redox reactions, including a multi-step analysis involving the indirect determination of an analyte.
Introductory exercises:
• Learning the principles of Good Laboratory Practice (GLP): measuring liquids, heating solutions, precipitating solids and their washing and filtration, ignition of precipitates, titration techniques, and maintaining a laboratory notebook,
• Calibration of volumetric flasks and pipettes,
• Correct weighing of a primary standard substance (e.g., Na₂CO₃) using an analytical balance.
Analyses:
• Preparation of an approximately 0.2 mol/L HCl solution and its standardization against a weighed Na₂CO₃ sample using a comparison buffer; determination of NaOH.
• pH-metric determination of mixtures of NaOH and Na₂CO₃ or Na₂CO₃ and NaHCO₃ using automatic burettes; identification of the sample composition and calculation of results based on the plotted titration curve.
• Preparation of a standardized 0.05 mol/L AgNO₃ solution from a dried salt sample; titration of a sample containing Cl⁻ ions using the Mohr method.
• Indirect manganometric determination of calcium ions: precipitation of CaC₂O₄, separation from the solution, dissolution in H₂SO₄, followed by titration of C₂O₄²⁻ ions with a standardized KMnO₄ solution.
• Preparation of a 0.05 mol/L EDTA solution and its standardization against ZnO; complexometric titration of a mixture of Ca²⁺ and Mg²⁺ ions.
Course coordinators
Type of course
Mode
Prerequisites (description)
Learning outcomes
Knowledge: The graduate knows and understands:
K W01: The role and place of chemistry in the structure of exact and natural sciences and its contribution to the development of our civilization. Knowledge of basic chemical concepts and laws, symbolism, nomenclature, and chemical notation, and understanding of chemical reactions.
K W15: Advanced knowledge of occupational health and safety principles sufficient for working in a chemical laboratory.
K W16: Ethical principles and norms related to research and teaching.
Skills: The graduate is able to:
K U01 apply the laws of chemistry learned in the analysis of selected chemical problems
K U05 conduct qualitative and quantitative analysis of inorganic substances, and use selected instrumental analysis techniques to analyze inorganic substances.
K U15 competently plan and conduct basic research and experiments in chemistry, and also demonstrate the ability to observe and critically evaluate their own results and discuss measurement errors
K U19 present the results of their own research in the form of a paper/presentation containing a description and justification of the purpose of the work, the adopted methodology, the results, and discuss their significance in comparison to other similar studies.
Social competencies: the graduate is ready to
K K01 define the scope of their knowledge and skills and to improve their professional and personal competencies.
K K05 perform professional roles responsibly, including: adhering to the principles of professional ethics and requiring the same from others, and caring for the achievements and traditions of the profession.
Assessment criteria
Final grade consists of:
- theoretical part (five short tests allowing the performance of laboratory exercises),
- practical part (obtained results of determinations)
Two absences are allowed.
Total student workload:
class participation 60 hours
class preparation 30 hours
preparing reports and analysis descriptions with quantitative calculations 20 hours
consultations 15 hours
Practical placement
Does not concern
Bibliography
1. Analytical prescriptions sent ny e-maile at the begining of the semester and available in lab.
2. A. Cygański „ Chemiczne metody analizy ilościowej”, WNT, 1992.
3. A. Cygański „ Metody elektroanalityczne”, WNT, 1991.
4. J. Minczewski, Z. Marczenko „Chemia Analityczna”, PWN, 1985.
5. A. Hulanicki „ Reakcje kwasów i zasad w chemii analitycznej”, PWN, 1979.
6. Lecture “Fundamentals of Analytical Chemistry”
Additional information
Information on level of this course, year of study and semester when the course unit is delivered, types and amount of class hours - can be found in course structure diagrams of apropriate study programmes. This course is related to the following study programmes: