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Electrochemistry and Chemical Kinetics
Course Objectives:
This course will enable the students to -
- make the students understand the concept of conductance, related laws and applications of conductance measurement.
- understand the concept of equilibrium of redox systems.
- provide an in-depth knowledge of theories of chemical kinetics and mechanism of catalyzed reactions.
Course Outcomes (COs):
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Course |
Learning outcomes (at course level) |
Learning and teaching strategies |
Assessment Strategies |
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Paper Code |
Paper Title |
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CHY-413 |
Electrochemi try and Chemical Kinetics
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The students will be able to –
CO108: describe various theories and effects related to electrolytic dissociation and know various applications of conductance measurement. CO109: calculate cell EMF and other thermodynamic quantities of cell reactions. CO110: describe the characteristics of various types of cells and can illustrate various applications of concentration cell. CO111: explain experimental methods and theories of chemical kinetics. CO112: describe mechanism of catalyzed reactions |
Interactive Lectures
Discussions
Tutorials
Problem solving
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Presentations by Individual Student/ Group of Three Students
Class Tests at Periodic Intervals.
Written assignment(s)
Semester End Examination
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Arrhenius theory of electrolytic dissociation . Conductivity, equivalent and molar conductivity and their variation with dilution for weak and strong electrolytes. Molar conductivity at infinite dilution. Kohlrausch law of independent migration of ions. Debye-Huckel-Onsager equation, Wien effect, Debye-Falkenhagen effect, Walden’s rules.
Ionic velocities, mobilities and their determinations, transference numbers and their relation to ionic mobilities, determination of transference numbers using Hittorf and Moving Boundary methods. Applications of conductance measurement: (i) degree of dissociation of weak electrolytes, (ii) ionic product of water (iii) solubility and solubility product of sparingly soluble salts, (iv) conductometric titrations and (v) hydrolysis constants of salts.
Types of reversible electrodes – gas-metal ion, metal-metal ion, metal-insoluble salt-anion and redox electrodes; electrode reactions, Nernst equation, EMF of a cell and its measurements, computation of cell EMF, calculation of thermodynamic quantities of cell reactions (∆G, ∆H & K), derivation of cell E.M.F. and single electrode potential; standard hydrogen electrode- reference electrodes, standard electrode potential, sign conventions, electrochemical series and its significance.
Electrolytic and Galvanic cells: reversible and irreversible cells, conventional representation of electrochemical cells. Concentration cell with and without transport, liquid Junction potential, applications of concentration cell - valency of ions, solubility product, activity coefficient, potentiometric titrations. Definition of pH and pKa, determination of pH using hydrogen, quinhydrone and glass electrodes and by potentiometric method.
Introduction of reaction rate in terms of extent of reaction; Rate constants, order and molecularity of reactions. Reactions of zero order, first order, second order, third order and fractional order, half life, mean life, Pseudo first order reactions (example using acid catalyzed hydrolysis of methyl acetate), Radioactive decay as first order reaction. Determination of order of a reaction by half-life and differential method, experimental methods of the determination of rate laws, Temperature dependence of rate constant. Arrhenius equation, energy of activation. Collision theory of reaction rates.
Kinetics of complex reactions (integrated rate expressions up to first order only) : Opposing reactions, parallel reactions and consecutive reactions. Rate-determining and steady-state approximation – explanation with suitable examples.
Types of catalyst, specificity and selectivity, mechanisms of catalyzed reactions at solid surfaces; Effect of particle size and efficiency of nanoparticles as catalysts. Enzyme catalysis, Michaelis-Menten mechanism, acid-base catalysis.
- A Textbook of Physical Chemistry; A.S. Negi, S.C. Anand; New Age International (P) Limited, New Delhi, 2007.
- Elements of Physical Chemistry; Seventh International Edition. P.W. Atkins, J. Paula; Oxford, India 2017.
- Elements of Physical Chemistry; Seventh Edition. P.W. Atkins, J. Paula; Oxford University Press, New York, 2016.
- Physical Chemistry; Fourth Edition; R.A. Alberty; Wiley Eastern Ltd., Singapore, 2004.
- Physical Chemistry Through Problems; S.K. Dogra and S.Dogra; Second Edition;New Age International Pvt. Ltd, New Delhi, 2001.
