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Analytical Chemistry

Code 8632
Year 2
Semester S1
ECTS Credits 6
Workload PL(30H)/T(30H)
Scientific area Chemistry
Entry requirements -
Mode of delivery Classroom teaching
Work placements Not applicable
Learning outcomes In this course unit it is intended that the student understands the chemical reactions the classical analytical methods are based on, in order to interpret the results obtained in the chemical analyses.
At the end of the course unit the student should be able to:
-Understand the behaviour of electrolyte solutions
-Calculate the pH from acid-base equilibrium
-Identify the requirements for the formation of precipitates and calculate solubilities in different media
-Apply complexing agents on the analysis of metals
-Apply redox equations in chemical analysis
Syllabus 1. Conductimetry
1.1. Conductivity measurements
1.2. Applications. Conductivity titrations
1.3. Activity and activity coefficient
2. Gravimetry
2.1. Solubility and solubility product
2.2. The common ion effect
2.3. The ionic strength effect
3. Precipitation titrimetry
3.1. Titration curves
3.2. Indicators
4. Neutralization titrimetry
4.1. Basic concepts
4.2. Titration curves
4.3. Indicators
4.4. Buffer solutions
5. Complexometric titrations
5.1. Titration curves
5.2. Titration of mixtures of metals. Interferences
6. Oxidation-reduction titrations
6.1. Redox reactions
6.2. Nernst equation
6.3. Titration curves
6.4. Oxi-reduction indicators

LABORATORY EXPERIMENTS
- Conductivity of strong electrolytes
- Precipitation reactions. Volumetric titrations
- Analysis of a mixture of sodium carbonate and sodium hydrogen carbonate
- Determination of water hardness
- Titration of iron (II) with potassium dichromate

Main Bibliography - D. A . Skoog, D. M. West e F. J. Holler, “Analytical Chemistry: An Introduction”, 6ª ed., Ed. Saunders College Publishing, 1994
- N. Baccan, J. C. Andrade, O. E. S. Godinho e J. S. Barone, “ Química Analítica Quantitativa Elementar”, 3ª ed., Ed. Edgard Blücher, Lda, 1994.
- R. L. Pecsok, L. D. Shields, T. Cairns, I. G. McWilliam, “Modern Methods of Chemical Analysis” 2ª ed., Ed. John Wiley & Sons, 1968
- D. Harvey, “Modern Analytical Chemistry” 15ª ed., Ed. Mc Graw-Hill, 2000
- J. E, McMurry, R. C. Fay, "Chemistry", 4th ed.,, Ed. Pearson, 2008
Teaching Methodologies and Assessment Criteria Teaching/Learning
Theoretical, TE, 75%: average of 2 tests
Practice, PL, 25%: average of 3 reports (50%) + practice test (50%)
Final classification = 0.75·TE + 0.50·PL
Approved with a rating greater than or equal to 9.50 val
To obtain frequency, in the Teaching/Learning classification, and consequently admission to the final exam, students must attend at least 60% of the theoretical classes, being mandatory to do all practical work with a classification greater than or equal to 9.50 val.
Assessment by exam
Final classification = 0.75·exam grade + 0.25·PL
Approved with a rating greater than or equal to 9.50 val
Language Portuguese. Tutorial support is available in English.
Last updated on: 2023-01-18

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