70/0001-M - CHEMISTRY
Academic Year 2020/2021
Free text for the University
LUCA PILIA (Tit.)
- Teaching style
- Lingua Insegnamento
|[70/89] ELECTRICAL, ELECTRONIC AND COMPUTER ENGINEERING||[89/10 - Ord. 2016] ELETTRICA||6||60|
|[70/89] ELECTRICAL, ELECTRONIC AND COMPUTER ENGINEERING||[89/20 - Ord. 2016] ELETTRONICA||6||60|
|[70/89] ELECTRICAL, ELECTRONIC AND COMPUTER ENGINEERING||[89/30 - Ord. 2016] INFORMATICA||6||60|
The course is devoted to the presentation of the most fundamental concepts of Chemistry. The understanding of the chemical equilibrium and mechanisms of transformation, in relationship with the atomic structure and with the nature of the chemical bonds, represents the main goal of the course. The systematic study of chemical behaviour is restricted to several elements and their compounds which are suitable for applications.
Knowledge and understanding: at the end of the course, the student will know the structure of matter and the principles which regulate its chemical and physical transformations (phase transitions, chemical reactions, etc…)
Applying knowledge and understanding: the student will be able to use the knowledge concerning the structure of matter in order to correlate qualitatively, its properties with its structure (structure-properties relationship).
Making judgments: the student will be able to judge autonomously: -validity and limits of the models concerning the structure of matter; -use of the principles of thermodynamics and kinetics in chemical reactions.
Communication skills: the student will acquire skills in communications of concepts concerning atomic structure, molecular thermodynamics and kinetics of chemical reactions.
Learning skills: the acquired knowledge will contribute to develop the student’s cultural baggage in phenomenological disciplines (physics and chemistry) and this will allow the student to continue his engineering studies with greater autonomy and discernment.
Basic knowledge of maths and physics, in particular logarithms, quadratic equations, units of measurement and their conversions, energy and work.
MATTER STRUCTURE AND PERIODIC CLASSIFICATION OF ELEMENTS (6 hours of lesson- 1 hour of exercises): Atomic fundamental particles; Atomic number and mass number; Nuclides, isotopes and chemical elements; Relative atomic mass; The mole; Hydrogen atomic structure and atomic models of Bohr and quantum mechanical model; Quantum numbers, Pauli exclusion principle and Hund’s rule; Construction of the electronic structure of an atom in its ground state; Periodic system and periodic properties of the elements.
CHEMICAL BONDS (6 hours of lesson- 1 hour of exercises): Ionic, covalent and metallic bonds; intermolecular interactions; single, double and triple bonds; molecular geometry, hybridization and resonance theories (example of carbon); Basic concepts of molecular orbital theory.
SUBSTANCES AND STOICHIOMETRIC CALCULATIONS: (5 hours of lesson- 3 hours of exercises): Elemental composition of a chemical compound, chemical formulas; chemical reactions and stoichiometric calculations.
STATES OF AGGREGATION OF MATTER (4 hours of lesson): Gas state; Macroscopic properties of gas; Ideal gas and equation of state; Use of the ideal gas law in chemistry; Gas mixtures: molar fractions, partial pressures, molecular weight (average); Solid state: ionic, molecular, covalent and metallic solids.
CONCEPTS OF THERMODYNAMICS (5 hours of lesson- 1 hour of exercises): 1st and 2nd law of thermodynamics; Enthalpy (Hess’s law) Entropy and Gibbs Free Energy of reaction; Spontaneity criterion.
PROPERTIES OF SOLUTIONS (3 hours of lesson- 1 hour of exercises): Colligative properties: relative lowering of vapor pressure; elevation of boiling point; depression of freezing point and osmotic pressure.
BASIC KNOWLEDGES OF KINETICS AND CATALYSIS (1 hours of lesson): Reaction order and rate law; Arrhenius equation; Activation energy; Catalysis and catalysts.
CHEMICAL EQUILIBRIA (6 hours of lesson- 1 hour of exercises): Law of mass action; Homogenous and Heterogeneous chemical equilibrium; Le Châtelier’s principle and factors which affect the equilibrium.
IONIC EQUILIBRIA IN WATER SOLUTIONS (6 hours of lesson- 2 hours of exercises): Theories of acids and basis: Arrhenius, Bronsted-Lowry and Lewis; neutral, acidic and basic solutions: pH; solutions pH calculations; Buffer solutions.
ELECTROCHEMISTRY (6 hours of lesson- 2 hours of exercises): Redox reactions; conversion of chemical energy in electric energy, and vice versa, in electrochemical devices: galvanic and electrolytic cells; Nerst equation; Electromotive force of galvanic cells; Standard hydrogen electrode; Standard reduction potential and electrochemical series; Oxidizing and reducing ability of a redox couple; Electrolysis and Faraday’s laws.
The course is structured in 48 hours of lessons and 12 hours of exercises concerning the topic of the lessons. Moreover, tutorials are also provided, in addition to the possibility of personal meetings with the teacher for further explanations on specific topics. During the tutorial activity, further exercises (weekly) as well as personal meetings for explanations about the theoretical topics and the solution of the related exercises are provided.
Due to the restrictions related to COVID-19 pandemic, classes will be organized according to the "blended learning" mode, i.e. both in-person and online. Hence, students will be given the opportunity to attend their classes regularly (in the classroom) or from home. At the beginning of each semester, students will be asked to make their explicit choice among these two possible options. In addition, if the number of students exceeds the maximum allowable prescribed for each classroom, suitable turns for in-person classes will be scheduled.
Verification of learning
Written examination/oral examination/partial examination
The final exam consists of two parts, a written test and an optional oral test. The former, as well as the partial examination, consists in solution of exercises of the same type of those presented during the lessons, and answer to questions about the subjects of the course.
The maximum mark achievable in a written test is 30/30 and 18/30 corresponds to the passing mark. The test is passed if the mark is 18 or higher.
The written test is designed to verify if the student has learned both the concepts and the ability to apply them to numerical problems. Specifically, the candidate must demonstrate knowledge of:
- The matter, its structure, its transformations and the principles which govern them;
- The elements and their chemical properties;
- The chemical bond, the secondary interactions and the relationship between the structure of a substance and its properties;
- Chemical equilibrium;
- The principles of electrochemistry.
The answers to the questions on the general concepts will also help to assess the ability of the candidate to express the concepts and notions learned in a clear and complete manner.
Bertani-Dettin-Mozzon-Sgarbarossa, “Fondamenti di Chimica per le Tecnologie”; ed. CEA;
Michelin-Munari, “Fondamenti di Chimica”; ed. CEA;
Schiavello-Palmisano, “Fondamenti di Chimica”, Edises Napoli;
Silvestroni, “Fondamenti di Chimica”; ed. CEA;
Brown-LeMay-……-Stoltzfus, “Fondamenti di Chimica”, Edises Napoli.
The didactic material provided is available at the website people.unica.it/lucapilia in the section “didattica” and in the Moodle webpage of the course. This material is composed of:
- Slides of lectures
- Texts of the of exercises;
- Summaries, one for each module, of the concepts presented and the skills that the student must acquire, along with several exercises with solutions;
- Texts of written exams from the previous sessions.