FISA DISCIPLINEI CHIMIE

Denumire curs:

Electrochimie

Domeniul:

stiinte exacte

Specializare:

Chimie

Tip disciplina:

Obligatorie

Nr. credite

Anul de studiu:

II

Semestrul

Ciclul:

Licenta (I)

Timp alocat:

Curs:

1h x 14sapt = 14h

Laborator.

2h x 14sapt =28h

Forma verificare:

Examen final - 80%

Verificari pe parcurs -20%

Titular curs:

Conf. Dr.

Constantin MIHAILCIUC

Laborator

Conf. Dr. Constantin MIHAILCIUC,

sef lucr. Dr. Herbert STORCH

Limba sustinere curs /examen

Româna

Course name:

Electrochemistry

Field of study:

Natural Sciences

Specialization:

Chemistry

Course type:

Compulsory

ECTS

Year of study:

II

Semester: 4

Program:

Bachelor (I)

Time allocated:

Course.

1h x 14 weeks = 14 h

Laboratory:

2h x 14 weeks = 28 h

Evaluation form

Final examination -80%

Periodical evaluation -20%

Professor in charge:

Conf. Dr.

Constantin MIHAILCIUC

Laboratory.

Conf. Dr. Constantin MIHAILCIUC,

sef lucr. Dr. Herbert STORCH

Language of instruction / examination

Romanian

Cuvinte cheie

Reactie de electrod, electrod, oxidare (proces anodic), reducere (proces catodic), potential de electrod, potential reversibil de electrod, supratensiune, polarizare, celule electrochimice (electrolizor, pila galvanica), cinetica stationara de electrod, tehnici electrochimice stationare (RDE), tehnici electrochimice nestationare (CV);

Keywords

Electrode reaction, electrode, oxidation (anodic process), reduction (cathodic process), electrode potential, reversible electrode potential, overpotential, polarization, electrochemical cells (electrolyser, galvanic cell), stationary electrode kinetics, stationary electrochemical techniques (RDE), non-stationary electrochemical techniques (CV)

Obiectivele Cursului:

Cursul Chimie Fizica- Electrochimie 212f520c se adreseaza studentilor Facultatii de Chimie, sectia Chimie si prezinta/asigura coerent notiunile fundamentale despre reactia de electrod, electrod, celule electrochimice, cinetica si termodinamica electrochimica, tehnici utilizate in studiul reactiei de electrod obligatorii pentru întelegerea specificitatii acestei stiinte si întregirea imaginii despre proprietatile moleculare si reactivitatea chimica.

Cursul dezvolta urmatoarele aspecte:

Tratarea fenomenologica si teoretica a reactiei de electrod;

Course Objectives

This course is addressed to students of the Faculty of Chemistry, Chemistry Section and develops coherently the main concepts on the electrode reaction, electrode, electrochemical cell, electrode kinetics, electrochemical thermodynamics, electrochemical techniques which are compulsory for understanding the specificity of electrochemistry and to complete the image of the molecular properties and reactivity. The following topics are developed:

Phenomenological and theoretical treatment of the electrode reaction;

Experimental study of the electrode reaction.

Competente acordate de absolvirea cursului

Absolventul dobîndeste cunostintele necesare pentru întelegerea notiunilor de baza despre natura reactiei de electrod si a electrodului in diferite celule prin utilizarea principalelor concepte din electrochimia experimentala si teoretica. Cursul ofera calificarea teoretica si practica pentru determinarea unor marimi termodinamice si cinetice specifice dar si a unor constante chimice prin diferite tehnici experimentale electrochimice. In urma celor predate, studentul poate urma cursuri cu profil avansat in diferite ramuri ale chimiei.

Competencies derived from the passing of the course

The graduate student will acquire the necessary knowledge to understand the basics of nature of electrode reaction and electrode in different cells by using the main concepts of the experimental and theoretical electrochemistry. The course provides the theoretical and practical qualification to determine certain thermodynamic and kinetic parameters but also several chemical constants by using different electrochemical techniques. The graduate student will be able to follow advanced courses in different the fields of chemistry

Obiective initiale

Obiective finale

Dobîndirea unor cunostinte despre reactia de electrod si cinetica si termodinamica de electrod prin folosirea procedurilor specifice electrochimiei.

1. Aplicarea notiunilor teoretice si experimentale pentru obtinerea de constante chimice din masuratori adecvate.

2. Studiul reactiei de electrod print-o tehnica electrochimica adecvata si interpretarea voltamogramei stationare si nestationare în scopul obtinerii de parametri cinetici si/sau termodinamici.

Discipline anterioare cerute

Obligatorii

Recomandate

Matematica - Informatica

Chimie fizica-Termodinamica

Fizica

Chimie generaa

Chimie fizica-Structura moleculara

Chimie anorganica

Chimie fizica-Cinetica chimica

Chimie organica

Acces la alte cursuri prin absolvirea prezentului curs

Bioelectrochimie

Tehnici electroanalitice moderne

Tehnici avansate în analiza instrumentala

Sisteme coloidale

Metode electrochimice si fotochimice în studiul mecanismelor de reactie

Starting objectives

Final objectives

Obtaining the basic concepts on the electrode reaction and electrode kinetics and electrochemical thermodynamics by using the specific approaches of electrochemistry.

1. Application of the theoretical and experimental concepts for obtaining chemical constants from experimental measurements.

2. Studying the electrode reaction by an appropriate electrochemical technique and the interpretation of the stationary and nonstationary voltammogram in order to obtain kinetic or thermodynamic parameters.

Access to other courses after graduation of the present course

Bioelectrochemistry

Modern electroanalytical techniques

Advanced Techniques in Instrumental Analysis

Coloidal Systems

Electrochemical and photochemical methods for the study of reaction mechanisms.

Planul Tematic al cursului

Nr. curs

Tema cursului

Nr. ore

Notiuni recapitulative despre reactia de electrod, electrod, celula electrochimica. Reactia de electrod si electrodul. Principalele notiuni. Legea Nernst.

Reactia de electrod si celula electrochimica. Pila galvanica si electrolizorul. Celule cu 2 si cu 3 electrozi. Legea Nernst.

Aplicatii ale masuratorilor de potentiale de electrod si tensiuni de celule. Determinarea coeficientului de temperatura al tem-ului, potentialului standard de electrod, constantei de aciditate bazicitate, constantei produs de solubilitate, constantei de stabilitate, coeficientului de activitate.

Cinetica stationara de electrod. Reactia de electrod cvasireversibila.

Cinetica stationara de electrod. Cazuri limita Reactia de electrod rapida (reversibila) si reactia de electrod lenta (ireversibila)

Tehnici electrochimice. Tehnici stationare, RDE. Tehnici nestationare, CV.

Domenii moderne în electrochimie. Electrozi chimic modificati. Motoare moleculare. Electrochimie supramoleculara.

Contents of the course

Course no.

Course topics

No. of hours

A Review of the Electrode Reaction, Electrode and Electrochemical Cell. Electrode Reaction and the Electrode. Main Notions. Nernst Law.

Electrode Reaction and the Electrochemical Cell. The Galvanic Cell and the Electrolyser. Cells with Two and Three Electrodes. Nernst Law.

Aplications of electrode Potential and Cell Voltage Measurements. Determination of temperature coefficient of electromotive tension, of standard electrode potential, of acidity constant, of constant of solubility product, of stability constant, of activity coefficient.

Stationary Electrode Kinetics. Quasi-reversible Electrode Reaction.

Stationary Electrode Kinetics. Limiting Cases: Fast (reversible) Electrode Reaction and Slow (irreversible) Electrode Reaction.

Electrochimical Techniques. Stationary Technique, RDE. Non-Stationary Technique, CV.

Modern Fields in Electrochemistry. Chemically Modified Electrodes. Molecular Motors. Supramolecular Electrochemistry.

Metoda de predare a cursului

Prelegeri.

Teaching Methods

Lectures

Prezenta si pregatirea pentru cursuri

Prezenta la cursuri este puternic recomandata ca o conditie pentru a întelege notiunile fundamentale de electrochimie. Prezenta la orele de laborator este obligatorie.

Se recomanda citirea bibliografiei indicate si efectuarea listelor de probleme primite saptaminal de studenti.

Lecture Preparation and Attendance

Attending to every course is strongly recommended and considered as a condition for understanding the fundamental concepts of electrochemistry. The presence at the lab works is compulsory.

Reading the specified references and solving the given problems are recommended.

Asistenta în pregatirea examenelor

Problemele teoretice sunt discutate în cadrul orelor de consultatii cu titularul de curs sau în cadrul sedintelor de laborator cu îndrumatorii activitatilor practice.

Study Coaching

Theoretical problems will be discussed during the consulting sessions with the professor and the assistants that supervise the practical works.

Continutul Activitatii aplicative

Nr. curs

Tema laboratorului / seminarului

Nr. ore

Prezentarea laboratorului. Protectia muncii.

Studii potentiometrice la curent nul: Studiul pilei Daniell prin masuratori potentiometrice; Determinarea potentiometrica a constantei de stabilitate a ionului tetraiodomercuric; Determinarea potentiometrica a constantei produs de solubilitate si solubilitatii iodurii de plumb.

Coroziunea a doua metale de natura diferita; Studiul prin voltametrie ciclica al reducerii fericianurii de potasiu.

Determinarea numarului de transport al anionului sulfat; Determinarea conductometrica a constantei produs de solubilitate a sulfatului de plumb.

Supratensiunea hidrogenului-metoda galvanostatica; Determinarea tensiunii de descompunere a apei.

Supratensiunea hidrogenului-metoda potentiostatica; Regresia liniara simpla-determinarea constantei de aciditate a acidului benzoic din masuratori de conductanta.

Test final din lucrarile practice si problemele parcurse în timpul semestrului

Content of Practical Works

Nr.

Laboratory/seminary topic

Nr. of hours

Presenting of the lab. Safety Measures.

Zero current potentiometry. Applications of electrode potentials and galvanic cell electromotive tension measurements: a) Potentiometric study of the Daniell galvanic cell; b) Potentiometric determination of solubility product for lead(II) iodide; c) Potentiometric determination of stability constant for complex ion.

a) The study of the corrosion process in a corrosion galvanic cell; b) Cyclic voltammetry study of the reduction of potassium hexacyanoferrate(III),

a) The determination of transport number of sulfate; b) Determination of the solubility and of the constant of the solubility product for sparingly soluble salt, by conductometric measurements

a) Determination of the decomposition tension of water; b) Hydrogen overtension. Galvanostatic method of determining the kinetic parameters; Hydrogen overtension

a) Hydrogen overtension. Potentiostatic method of determining the kinetic parameters; b) Linear regression: The determination of acidity constant of benzoic acid from conductance measurements.

Final testing of the knowledge acquired from practical works and problems.

Sistemul de evaluare a cunostintelor studentilor

Se va urmari periodic rezolvarea listelor de probleme si redactarea rezultatelor de laborator.

Orele practice se vor incheia cu un colocviu la care nota trebuie sa fie minimum 6/10.

Examenul final va fi scris. La cererea studentilor examenul poate continua si oral. Nota minima pentru promovare 5/10

Evaluation methods

Solving of the problems and interpretation of the lab results will be periodically checked.

The lab will end with an exam for which the mark must be at least 6/10.

The final exam will be written. The exam may continue orally by student's request. The minimum mark for passing the exam is 5/10.

Sistemul de notare

Examenul scris cuprinde un numar de 6 subiecte (3 subiecte de Teorie si 3 subiecte de Probleme) din care studentul poate alege cîte 2. Subiectele de Teorie nu sunt identice cu cele prezentate în curs ci asemanatoare.

Cerinte pentru nota 10: Rezolvarea integrala a subiectelor propuse

Activitatea

Tip de cerinta

% din nota

pre-examen

% nota finala

Prezenta la cursuri

neeliminatorie

Prezenta la laborator si efectuarea integrala a lucrarilor cu prezentare de referat

eliminatorie

Test final (laborator)

eliminatorie

Examen scris

obligatoriu

Grading

The exam consists of 6 subjects (3 of Theory and 3 of Problems) but the student may choose 2 of Theory and 2 of Problems. The Theory subjects are not identical with those presented to the Course but analogue.

Minimal requests (for 5/10): Executing all practical works and interpreting the results; solving at least 2 of the exam subjects.

For maximum mark (10/10): solving all the exam subjects

Activity

Type or requirement

% of the pre-exam grade

% final grade

Attendance of lectures

Strongly recommended

Executing the practical works and presentation of report

Compulsory

Final test (laboratory)

Compulsory

Written exam

Compulsory

Nr.

Bibliografie pentru Curs / Seminar / Probleme

C. Mihailciuc, "Electrochemistry", Editura Universitatii din Bucuresti, 2006;

C. Mihailciuc, "Electrochimie", Editura Universitatii din Bucuresti, 2001;

D. R. Crow; "Principles and applications of electrochemistry", London, Chapman and Hill, 1988;

J. P. Diard, B. Le Gorrec, C. Montella "Cinétique électrochimique"; Hermann, 1996

Silbey R.J., Alberty R. A., Bawendi M. G - ,,Physical chemistry ", ed. IV, Wiley, 2005

C. Bendic, V. Meltzer, C. Mihailciuc, "Chimie Fizica - Structura si spectrometrie moleculara, termodinamica, cinetica chimica, electrochimie, coloizi", Editura Universitatii din Bucuresti, 2004.

Nr.

Bibliografie pentru Laborator (activitati aplicative)

Referatele lucrarilor de laborator existente în Laboratorul de Electrochimie în limbile româna, engleza si franceza.

Liste personale de probleme existente în Laboratorul de Electrochimie în limbile româna, engleza si franceza.

C. Bendic, V. Meltzer, C. Mihailciuc, G. Cristescu, M. Puiu, H. Storch, M. Spiroiu"Chimie Fizica - Lucrari practice si seminar - Structura si spectrometrie moleculara, termodinamica, cinetica chimica, electrochimie, coloizi", Editura Universitatii din Bucuresti, 2005.

E. Constantinescu, H. Storch, M. Andrei, G. Dima, Lucrari practice de electrochimie si coroziune", Editura Universitatii din Bucuresti, 2001.

E. Constantinescu, H. Storch, Lucrari practice si probleme de electrochimie, Editura Universitatii din Bucuresti, 2007.