Engineering Chemistry Notes | Unit 1 – 6

Course Objectives:

  1. To understand technology involved in analysis and improving quality of water as commodity.
  2. To acquire the knowledge of electro-analytical techniques that facilitates rapid and precise
    understanding of materials.
  3. To understand structure, properties and applications of speciality polymers and nano material.
  4. To study conventional and alternative fuels with respect to their properties and applications.
  5. To study spectroscopic techniques for chemical analysis.
  6. To understand corrosion mechanisms and preventive methods for corrosion

Examination Scheme:

In Semester : 30 Marks
End Semester: 70 Marks
PR: 25 Marks

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Unit I: Water Technology

Impurities in water, hardness of water: Types, Units and Numericals. Determination of hardness (by EDTA method using molarity concept) and alkalinity, numericals. Ill effects of hard water in boiler – priming and foaming, boiler corrosion, caustic embrittlement, scale and sludge. Water treatment: i) Zeolite method and numericals ii) Demineralization method. Purification of water: Reverse osmosis and Electrodialysis.

Unit 2: Instrumental Methods of Analysis

Introduction: Types of reference electrode (calomel electrode), indicator electrode (glass electrode), ion selective electrode: ion selective membranes such as solid membrane, enzyme based membrane and gas sensing membrane.
[A] Conductometry: Introduction, conductivity cell, conductometric titrations of acid versus base with titration curve.
[B] pHmetry: Introduction, standardization of pH meter, pH metric titration of strong acid versus strong base with titration curve.

Unit 3: Engineering Materials

A] Speciality polymers: Introduction, preparation, properties and applications of the following polymers:

  1. Engineering Thermoplastic: Polycarbonate,
  2. Bio-degradable polymers: Poly (hydroxybutyrate-hydroxyvalanate),
  3. Conducting Polymer: Polyacetylene,
  4. Electroluminescent polymer: Polyphenylenevinylene,
  5. Polymer composites: Fiber reinforced plastic (FRP)- Glass reinforced and Carbon reinforced polymer composite
[B] Nanomaterials: Introduction, classification of nanomaterials based on dimensions (zero dimensional, one-dimensional, two-dimensional and three-dimensional), structure, properties and applications of graphene and carbon nanotubes, quantum dots (semiconductor nanoparticles).

Unit 4: Fuels

Introduction (definition, classification of fuel based on chemical reactions and characteristics of an ideal fuel),
Calorific value (CV): Higher calorific value (HCV) and Lower calorific value (LCV),
Determination of Calorific value: Principle, construction and working of Bomb calorimeter and Boy’s gas calorimeter and numericals,
Solid fuel: Coal: Analysis of Coal-Proximate and Ultimate analysis, numericals,
Liquid fuel: Petroleum: Refining of petroleum /crude oil and composition, boiling range and uses of various fractions,
Gaseous fuel: Composition, properties and applications of CNG. Hydrogen gas as a future fuel
Alternative fuels: Power alcohol and biodiesel.

Unit 5: Spectroscopic Techniques

[A]UV-Visible Spectroscopy:
Introduction, interaction of electromagnetic radiation with matter, statement of Beer’s law and Lambert’s law, absorption of UV radiation by organic molecule leading to different electronic transitions, terms involved in UV-visible Spectroscopy- chromophore, auxochrome, bathochromic shift, hypsochromic shift, hyperchromic shift and hypochromic shift, Instrumentation and basic principle of single beam spectrophotometer, applications of UV-visible spectroscopy.
[B] Infra red Spectroscopy: Introduction, Principle of IR Spectroscopy, types of vibrations: Stretching (symmetric and asymmetric) and bending (scissoring, rocking, wagging and twisting), conditions of absorption of IR radiations, vibration of diatomic and polyatomic molecules. Instrumentation with block diagram. Parts of IR spectrum, fundamental group region, fingerprint region, applications of IR spectroscopy.

Unit 6: Corrosion Science

Introduction, Types of corrosion – Dry and Wet corrosion, mechanism of dry corrosion, nature of oxide films and Pilling-Bedworth’s rule, wet corrosion – mechanism: hydrogen evolution and oxygen absorption, galvanic cell corrosion, concentration cell corrosion, Factors influencing rate of corrosion. Methods of corrosion control and prevention: cathodic and anodic protection, metallic coatings and its types, surface preparation, methods to apply metallic coatings-hot dipping, cladding, electroplating, cementation.