2023
Analytical Chemistry I
Name: Analytical Chemistry I
Code: QUI11966L
6 ECTS
Duration: 15 weeks/156 hours
Scientific Area:
Chemistry
Teaching languages: Portuguese
Languages of tutoring support: Portuguese
Sustainable Development Goals
Learning Goals
In this curricular unit it is intended that the students acquire fundamental knowledge on qualitative and
quantitative analytical methods, namely separation by precipitation and gravimetric, volumetric and
thermal analysis.
At the end of the curricular unit the students should be able to: correctly interpret results on the basis of a
solid knowledge of the underlying theoretical principles and of the chemical reactions and equilibria
involved; select appropriate method (s) for specific quantitative analysis; recognize advantages and
limitations of methods; perform calculations involving simple and complex mixtures.
quantitative analytical methods, namely separation by precipitation and gravimetric, volumetric and
thermal analysis.
At the end of the curricular unit the students should be able to: correctly interpret results on the basis of a
solid knowledge of the underlying theoretical principles and of the chemical reactions and equilibria
involved; select appropriate method (s) for specific quantitative analysis; recognize advantages and
limitations of methods; perform calculations involving simple and complex mixtures.
Contents
1. Solubility and precipitation. Separation by selective precipitation. Qualitative analysis of cations.
Properties of precipitates and precipitation reragents. Gravimetric analysis. 2. General aspects of
volumetric titrations. Standard solutions and standardization. Equivalence and final points. Required
characteristics of titration reactions. Direct and back-titrations. 3. Precipitation titrations. Methods of Mohr,
Charpentier-Volhard and Fajans. Titration curves of one analyte and of mixtures. 4. Acid-base titrations.
Buffers. Titration curves for simple and complex systems. Indicators. 5. Complex formation titrations.
EDTA Titrations. Titration curves of simple and complex mixtures. Use of metallochromic indicators and of
auxiliary complexing agents. 7. Redox titrations. Use of pre-oxidizing and pre-reducing agents. Titration
curves of simple and complex systems. Indicators. 8. Thermal analysis.
Properties of precipitates and precipitation reragents. Gravimetric analysis. 2. General aspects of
volumetric titrations. Standard solutions and standardization. Equivalence and final points. Required
characteristics of titration reactions. Direct and back-titrations. 3. Precipitation titrations. Methods of Mohr,
Charpentier-Volhard and Fajans. Titration curves of one analyte and of mixtures. 4. Acid-base titrations.
Buffers. Titration curves for simple and complex systems. Indicators. 5. Complex formation titrations.
EDTA Titrations. Titration curves of simple and complex mixtures. Use of metallochromic indicators and of
auxiliary complexing agents. 7. Redox titrations. Use of pre-oxidizing and pre-reducing agents. Titration
curves of simple and complex systems. Indicators. 8. Thermal analysis.
Teaching Methods
The teaching is accomplished in theoretical classes, where the subjects are presented, continuously
encouraging the students to participate through answers to questions put forward by teacher and students
and supported with problems involving practical real situations. During the semester the students are
provided with exercises which they should solve and deliver to the teachers. Explanations and discussions
about the resolution of these and others, take place in the theoretical-practical classes.
Evaluation is carried out through 3 written tests or one final exam.
(Note: the curricular unit Advanced Laboratories of Chemistry I includes a group of practical classes
related with the contents of the present curricular unit).
encouraging the students to participate through answers to questions put forward by teacher and students
and supported with problems involving practical real situations. During the semester the students are
provided with exercises which they should solve and deliver to the teachers. Explanations and discussions
about the resolution of these and others, take place in the theoretical-practical classes.
Evaluation is carried out through 3 written tests or one final exam.
(Note: the curricular unit Advanced Laboratories of Chemistry I includes a group of practical classes
related with the contents of the present curricular unit).
