For the course unit "General Chemistry II", upon completion of the course, students will be able to:
model chemical reactions;
carry out stoichiometric calculations;
define and calculate the properties of solutions (concentration, pH, buffer, etc.);
to critically evaluate approximate pH equations;
to write and balance reaction equations (dissociation, acid-base, redox, precipitation, combustion, etc.);
to describe and calculate changes in the acidity (pH) of a reaction medium;
to use theoretical concepts to explain reactivity in general chemistry and predict the spontaneity of chemical reactions;
to write and balance reaction equations (dissociation, acid-base, redox, precipitation, combustion, etc.);
explain the principle behind and carry out various titrations (acid-base, redox, etc.);
demonstrate and apply kinetic concepts to describe reaction rates;
use chemistry equipment correctly to carry out laboratory experiments;
apply theoretical concepts to analyse, interpret and discuss experimental results.
The objectives of this course are to • to give the student a rigorous basic training in certain aspects of general chemistry (acidity (pH); thermochemistry; kinetics); • explain and predict chemical transformations using different theoretical concepts; • to carry out an experimental approach; • solve problems using mathematical reasoning and tools; • interpret data presented in different forms (table, graph, text, etc.)
This module focuses on the fundamental theories of chemistry. The behaviour of various compounds in aqueous solution and their reactivity are discussed. The study of reaction kinetics highlights the phenomena of catalysis and the importance of reaction mechanisms. Stoichiometry covers the quantitative aspects of solutions and chemical reactions. The study of how different compounds behave in solution and of ionic dissociation leads to the concepts of pH, buffer solutions and the study of how pH changes during a reaction.
Chapter 1: Simple reactions 1.1. Hydration of oxides 1.2. Acid-base reactions 1.3. Redox reactions 1.4. Precipitation reactions.
Chapter 2: Ionic dissociation 2.1. The concept of an electrolyte 2.2. Dissociation constant of an electrolyte 2.3. Mechanism of dissociation 2.4. Ionic product of water
Chapter 3: Kinetics. 3.1. General concepts. 3.2. Formal kinetics. 3.3. Kinetic factors. 3.4. Kinetic theories. 3.5. Rate equation and reaction mechanism. 3.6. Catalysts and inhibitors. 3.7. Enzymatic catalysis. 3.8. Kinetic and thermodynamic criteria for a reaction.
Chapter 4: Acid-base theories. 4.1. Arrhenius theory. 4.2. Generalised acid-base theory (Brønsted–Lowry theory)
Chapter 5: Concept and calculations of pH: 5.1. Concept of pH. 5.2. Calculations of pH in aqueous solutions.
Chapter 6: Titration curves and buffer solutions. 6.1. Titration curves. 6.2. Buffer solutions.
Every week, either a practical session (TP) or a tutorial (TD) is held. Attendance at practicals and tutorials is compulsory. Three practical sessions are spread over the four-month term: 1) Redox titrations 2) Kinetics 3) pH measurement, titration curves. These practicals are assessed through written tests held at the start of each session and through laboratory reports submitted at the end of the session or a few days (the deadline to be specified by the teaching assistant) after the session, depending on the content of the report. In the other weeks, tutorial sessions are held: these sessions last 2 hours. Tutorials are assessed by means of two tests spread over the year, covering the material covered during the tutorial sessions preceding the test. The dates of the tests are announced at the start of the four-month term.
Different approaches are used in this teaching unit: • The theoretical concepts are presented in the form of a lecture based on a powerpoint. The latter is made available to students on the university's website "webcampus"; • Exercises in small groups (about 30 students), supervised by an assistant, allow the theoretical concepts to be applied and deepened; • Practical laboratory work, carried out individually under the supervision of an assistant, allows the theoretical concepts to be illustrated and manipulated. They also allow students to learn the correct use of the basic equipment of a chemistry laboratory and the protocols to be followed to carry out simple manipulations. • Teaching methods may be adapted to comply with health requirements.
The teaching unit "General Chemistry II" consists of three learning activities: - the theoretical course - tutorials (exercises) (TD) - practical work (laboratories) (TP) Each of these learning activities is assessed. In the course of the term, the student • The student must bring a simple, non-programmable calculator without a cover to the examination. If the student is absent during a test, and if this absence is justified by a medical certificate submitted to the secretariat of the Faculty of Science at end of the certificate, the student must retake the test at the end of the term, on a date to be communicated to him/her in due course. If the absence is not justified by a medical certificate, the student will receive a mark of 0/20 for this test. • must carry out practical work. Each practical session is evaluated by an entrance examination (1/4 of the points) and a laboratory report (3/4 of the points) which must be handed in to the assistant within the time limit specified by the latter during each practical session. The average of the laboratory evaluations constitutes 10% of the final grade of the teaching unit. In case of absence, if justified by a medical certificate, submitted to the secretariat of the Faculty of Science, at end of the certificate, the student must send an e-mail to "didactique.chimie@unamur.be" within three days from the beginning of the absence to inform the secretariat of the absence and the date on which he/she will be able to recover the TP. If the student fails to do this, a mark of 0/20 will be awarded for the practical course concerned. Any absence not justified by a medical certificate will result in a mark of 0/20 for the practical course concerned. The final marks of the practical and practical courses are definitively acquired at the end of the corresponding activities.
During the examination session at the end of the second semester (May-June), the student has a written examination on the whole subject of the course unit. This is an open-ended written examination (3 hours) with many exercises. During the examination, the student may not have access to any documents other than the questionnaire and answer form provided by the teacher. The student must bring a simple, non-programmable, uncovered calculator to the examination. The student may not carry or have within reach any connectable object. In order to receive credit for the course, the student must obtain an average grade of at least 10/20. The weighted average for the teaching unit is calculated as follows: written examination in session (70%), final mark acquired during the year for TD (20%), final mark acquired during the year for TP (10%). The assessment of the different learning activities may be adapted to comply with the health requirements, which could lead to a modification of the weighting of the different activities (lectures, tutorials, practical work) in the calculation of the final mark of the course. All changes imposed by the health requirements will be communicated to the students via the SCHIB119: General Chemistry II website.
During the summer examination session (August) the student has a written examination on the whole subject of the course unit, if he/she has not validated the credits corresponding to this course unit in the previous session. The examination is an open-ended written examination (3 hours) with many exercises. During the examination, the student may not have access to any documents other than the questionnaire and answer form provided by the teacher. The student must bring a simple, nonprogrammable, uncovered calculator to the examination. The student may not carry or have within reach any connectable object. To validate the credits of the course unit, the student must obtain a weighted average mark of at least 10/20. The calculation of the weighted average mark is the same as in June. The TD and TP marks acquired during the year are retained.
Chemistry concentrate, J.Wouters, PUN
| Training | Block | Credits | Mandatory |
|---|---|---|---|
| Bachelor in Biology | 1 | 4 | Yes |