Analytical Chemistry

Code:

Q2021

Acronym:

Q2021

Keywords
Classification	Keyword
OFICIAL	Chemistry

Instance: 2021/2022 - 1S

Active?	Yes
Responsible unit:	Department of Chemistry and Biochemistry
Course/CS Responsible:	Bachelor in Agricultural Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L:EA	7	The study plan from 2019	2	-	6	56	162

Teaching language

Portuguese

Objectives

By attending lectures, students are expected to acquire some basic notions in Analytical Chemistry and to recognise the importance of chemical analysis towards solving real-world problems. Tutorials: Resolution examples are presented, as well as exercises on topics previously discussed in lectures. Practical classes: set of 4 laboratory experiments designed in order to allow students understand theoretical concepts discussed in lectures and tutorials.

Learning outcomes and competences

Acquisition of basic notions in Analytical Chemistry and resolution of problems.

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Fundamentals of chemistry

Program

Lectures

CHAPTER 1.Equilibria in solution 1.1. General information about solutions 1.2. The water dissociation 1.3. Types of reactions in aqueous solution 1.4. Calculation of equilibrium concentrations 1.5. Acid-base reactions 1.6. Precipitation reactions 1.7. Complexation reactions 1.8. Redox reactions

CHAPTER 2. Volumetric Analysis 2.1. Viability criteria for the analysis 2.2. Types of volumetry 2.3. Detection of the equivalence point 2.4. Standard solutions 2.5. Acid-base titrations 2.6. Redox titrations 2.7. Precipitation titrations 2.8. Complexation titrations

CHAPTER 3. Potentiometry 3.1. Reference electrodes 3.2. Indicator electrodes 3.3. Cell potentials 3.4. Interferences 3.5. pH measurement 3.6. Other membrane electrodes 3.7. Potentiometric measurements 3.8. Direct potentiometric measurements 3.9. Potentiometric titrations

Tutorials
Resolution examples and exercises on topics discussed in lectures.

Practical classes
Laboratory experiments to be performed: T1-Determination of H₂O₂ content in commercial hydrogen peroxide by permanganometry titration; T2-Potentiometric titration of a hydrochloric-acetic acid mixture; T3-Potentiometric determination of anions (F^- ou NO₃^-) in a drinking water; T4-Spectrophotometric determination of total iron in water;

Mandatory literature

Harris Daniel C.; Quantitative chemical analysis. ISBN: 0-7167-2508-8
Aquiles Araújo Barros; Elementos de Química Analítica, 2001
João Cabral; Lições de Química Analítica (Princípios Fundamentais), FCUP, 1983

Complementary Bibliography

Adélio Machado; Análise Volumétrica, 2ª Edição, Centro de Investigação em Química (U.P.), 1978
João Cabral; Tabelas e Formulário de Química, 1993

Teaching methods and learning activities

Lecture material can be followed on slides available in the web page of the curricular unit. Tutorials: Resolution examples are presented, as well as exercises on topics previously discussed in lectures. Practical classes: set of laboratory experiments and their reports, designed in order to allow students understand theoretical concepts discussed in lectures and tutorials.

Evaluation Type

Distributed evaluation with final exam

Assessment Components

designation	Weight (%)
Exame	75,00
Trabalho laboratorial	25,00
Total:	100,00

Amount of time allocated to each course unit

designation	Time (hours)
Estudo autónomo	52,00
Frequência das aulas	26,00
Trabalho laboratorial	13,00
Total:	91,00

Eligibility for exams

Attendance of at least 75% of the tutorials and practical classes.

Calculation formula of final grade

Final mark = 75% exam (possibility of fractionated evaluation)+ 25% tutorials and practical classes. Theris the possibility to replace the exam by two writen tests. Choosing the test option it is not possible to upgrade the classification in the Normal exam season.

There is a mininal mark of 8 at the exam.

There is a mininal mark of 9.5 at tutorials and practical classes.

Examinations or Special Assignments

Are not provided.

Internship work/project

not applicable.

Special assessment (TE, DA, ...)

The special assessment shall be a written examination.

Classification improvement

Distributed evaluation can not be improved.

The final mark can be improved only by final exam.

Observations

Students who obtained a positive note to the practical and theoretical-practical component and did not obtain approval in the previous academic year may request exemption from the laboratory practical classes. For these students, the classification of the practical and theoretical-practical component is that of the previous year.