CHIMICA CON ESERCITAZIONI

Degree course: 
Corso di First cycle degree in Physics
Academic year when starting the degree: 
2019/2020
Year: 
1
Academic year in which the course will be held: 
2019/2020
Seat of the course: 
Como - Università degli Studi dell'Insubria
Credits: 
8
Period: 
Second semester
Standard lectures hours: 
64
Requirements: 

No requirements.

Final Examination: 
Orale

The examination is based on a written test (50%) followed by an oral examination (50%) in case of positive result from the written test.

Assessment: 
Voto Finale

The Course will provide students with fundamental knowledge of chemistry and its principles, with special attention to those regarding the atomic structure, periodic properties of the elements, the chemical covalent and ionic bonds, intermolecular forces. Students will know how to handle quantitative aspects of a chemical reaction and to deal with both homogeneous and heterogeneous chemical equilibria.

1) The atomic structure and the Periodic Table of the elements (10 hours)
Atomic and mass number. Isotopes. Energy quantization. Bohr’s atomic model for hydrogen atom. Electron wave properties and de Broglie’s equation. Heisenberg indetermination principle. Schrödinger wave equation and the quantum numbers. Electronic configuration: Pauli’s principle and Hund’s rule.
The Periodic Table of the elements: blocks, groups, periods. Periodic properties.

2) The chemical bond (10 hours)
Ionic and covalent bond. Bonds and molecules polarity. Molecules shape: VSEPR theory. Sigma- and pi-bonds. Multiple bonds. Molecular orbital theory: application to diatomic molecules of second period elements. Intermolecular forces.

3) Mole and molar ratios (4 hours)
Pure substances (elements, compounds) and mixtures. Chemical formulas. The mole and molar mass. Percentage composition of the elements in a compound. Use of molar ratios in chemical reactions: limiting reagent and reaction yield.

4) Ideal gases (4 hours)
Ideal gases model. Avogadro’s principle. Ideal gases Laws. Ideal gases mixtures: Dalton’s and Amagat’s laws.

5) Solutions (4 hours)
Expressing concentrations of solutions. Solutions’ dilution. How to deal with solutions in a chemical reaction.

6) Chemical kinetics (6 hours)
Reaction rate and kinetic equation. Reaction order. Elementary reactions and reaction mechanisms. Brief introduction to collision theory and transition state. From kinetics to equilibrium.
7) Thermochemistry and equilibria (10 hours)
The energy and its types. First principle of thermodynamics. Internal energy. Enthalpy. Hess’s law. Entropy and the second principle of thermodynamics. Gibb’s free energy and chemical reactions spontaneity. Third principle of thermodynamics. Homogenous gaseous equilibrium. Equilibrium constant and reaction quotient. Le Chatelier’s principle. Heterogeneous equilibria.

8) Chemical equilibria in aqueous media (8 hours)
Ionic water product. Acids and bases: definitions and theories from Arrehnius, Brønsted and Lewis. Definition of acidity and basicity constants for weak acids and bases. Aqueous solutions of acids and bases: pH definition and calculation. Buffer solutions. Acid-base titrations.

9) Electrochemistry (8 hours)
Oxidation-reductions reactions (redox). Electrochemical potentials. Standard reduction potentials. Electrochemical cells: Nernst’s law. Electrolysis processes: molten salts and aqueous solutions of salts. Quantitative aspects of electrolysis: Faraday’s laws.

Recommended books:
P. Atkins, L. Jones, “Fondamenti di Chimica Generale”, Zanichelli
A. Caselli, S. Rizzato, F. Tessore, “Stechiometria”, EdiSES.

The Coruse is based on classroom lectures (with PowerPoint presentation). PowerPoint slides will be available to students few days before the lecture through the web blackboard (e-learning).

Office hours:
Monday-Friday, from 9.30 to 12.00 and from 14.00 to 18.30.