EFFECT FROM THE ACADEMIC YEAR 2014 - 2015

CH 101

ENGINEERING CHEMISTRY

Instruction                                                                                                                                                                                          3  Periods per week

Duration of University Examination                                                                                                                                                      3  Hours

University Examination                                                                                                                                                                        75Marks

Sessional                                                                                                                                                                                            25Marks

UNIT - I : ELECTROCHEMISTRY

1.1 Electrodics :

 Electrochemical Cells — Electrolytic and Galvanic Cells. Cell notation. Concept of electrode potential and EMF. Determination of single electrode potential. Electrochemical Series-significance. Nernst equation derivation and applications - Numerical Problems. Types of Electrodes (a) Gas Electrode    (Standard Hydrogen Electrode) (b) Metal- insoluble salt Electrode (Calomel Electrode) (c)  Redox Electrode (Quinhydrone Electrode) (d) Ion selective electrode (Glass electrode)

1.2. Electroanalytical Techniques:

Principle, method and applications of the following techniques. Conductometry: Acid — Base titrations. Potentiometry: Acid — Base and Redox titrations. pH metry: Acid — Base titrations.

1.3. Battery Chemistry:

Concept of Reversible and Irreversible cells. Primary, secondary and flow batteries: Zinc—AgO, Nickel-Cadmium and Lithium- Ion batteries — Construction, working and applications. Flow batteries (Fuel Cells): Hydrogen — Oxygen and   Methanol — Oxygen fuel cells.

UNIT II : CORROSION AND WATER CHEMISTRY

2.1 Corrosion and its control:

Causes and effects- Types of corrosion-Chemical (dry) and electrochemical (wet) corrosion —Mechanism of electrochemical corrosion —Formation of anodic and cathodic areas —Galvanic corrosion, differential aeration corrosion (waterline and pitting corrosion) Factors affecting the rate of Corrosion (a) Position of metals in Galvanic Series. (b) Relative areas of anode and cathode. (c) Nature of corrosion product, (d) Temperature (e) Humidity and (f) pH - Pourbaix diagram Corrosion Control Methods: Cathodic Protection — Sacrificial Anode and  Impressed Current Methods.

2.2 Surface Coating:

Types of Metallic Coatings, Anodic and Cathodic Coatings-Methods of application of metallic coatings-Electroplating (Nickel Plating) and Electroless plating (Copper Plating). Paints-constituents and their functions.

2.3. Water Chemistry:

Hardness of water-Types — Units of hardness - Determination of temporary  and Permanent Hardness of water by EDTA Method (numerical problems) - Alkalinity of water & its determination. Water softening by Ion- Exchange and Reverse Osmosis methods. Specifications of potable water (BIS/ WHO standards). Disinfection of drinking water by chlorination-Break point chlorination and Ozonization.