Engineering Chemistry - A

Unit 1 : Atomic Structure and Chemical Bonding (6 hours)

Fundamental particles of atom – their mass, charge and location – atomic number and mass number – Schrödinger equation. Significance of ψ and ψ² – orbital concept – quantum numbers - electronic configuration. Periodic properties. Formation of cation and anion by electronic concept of oxidation and reduction – theories on bonding- octet, Sidgwick and Powell, VSEPR and VBT-MOT.  Formation of electrovalent, covalent and coordination compounds. Chemistry of weak interactions – van der Waals force and hydrogen bonding.

Unit II : Electrochemical energy system (8 hours)

Faradays laws, origin of potential, electrochemical series, reference electrodes, Nernst equation, introduction to batteries – classification – primary, secondary and reserve (thermal) batteries. Characteristics – cell potential, current, capacity and storage density, energy efficiency. Construction, working and application of Leclanche cell-Duracell, Li-MnO₂ cell, lead acid batteries. Ni-Cd battery, Lithium ion batteries. Fuel cell - construction and working of PEMFC.

Unit III : Photochemistry and solar energy (8 hours)

Electromagnetic radiation. Photochemical and thermal reactions. Laws of photochemistry, quantum yield, high and low quantum yield reactions. Jablonski diagram – photo-physical and photochemical processes, photosensitization, photo-polymerization and commercial application of photochemistry.

Solar energy - introduction, utilization and conversion, photovoltaic cells – design, construction and working, panels and arrays. Advantages and disadvantages of PV cells. DSSC (elementary treatment).

Unit IV : Corrosion control and metal finishing (8 hours)

Introduction, causes and different types of corrosion and effects of corrosion, theories of corrosion – chemical corrosion, Pilling  Bed-worth ratio, electrochemical corrosion and its mechanism, factors affecting corrosion –galvanic series. Corrosion control methods – cathodic protection, sacrificial anode, impressed current cathode. Surface coatings - galvanizing, tinning, electroplating of Ni and Cr, organic surface coatings – paints, constituents and functions. Anodising and electroplating of aluminium.

UNIT V : Water Technology (6 hours)

Hardness of water – types – expression of hardness – units – estimation of hardness of water by EDTA. Numerical problems – boiler troubles (scale and sludge). Treatment of boiler feed water – Internal treatment (phosphate, colloidal, sodium aluminate and calgon conditioning).External treatment – Reverse Osmosis, ion exchange process.

Evaluation Pattern:

*CA – Can be Quizzes, Assignment, Projects, and Reports.

Text Books:

1. Vairam and Ramesh“Engineering Chemistry”, Wiley, 2012
2. Amrita Vishwa Vidyapeetham, Department of sciences, “Chemistry Fundamentals for Engineers”, McGraw Hill Education, 2015.

Reference Books:

1. Jain and Jain, “Engineering Chemistry”, Dhanpat Rai Publishing company, 2015
2. Puri, Sharma and Patania, “Principles of Physical chemistry”, Vishal Publishing Co., 2017.
3. Atkins, “Physical Chemistry”, OUP, Oxford, 2009.