CHENolCSEIT

8/6/2019 CHENolCSEIT

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ENGINEERING CHEMISTRYII

NOTES ON LESSON

UNITI

ELECTRO CHEMISTRY Introduction to electrochemistry

Types of conductors Types of electrolytes Cell terminology

Electrochemical cells (or) galvanic cells Daniel cell Representation of a galvanic cell

Reversible and irreversible cells EMF of a cell

Measurement of emf of a cell Single electrode potential(E)

Standard electrode potential(E0) Nernst equation for electrode potential Problems based on nernst equation

Reference electrodes(or) standard electrodes Primary reference electrode

o Standard hydrogen electrode Secondary reference electrode

o Standard calomel electrode Types of electrodes

Glass electrode(internal reference electrode) Determination of PH of a solution using glass electrode

Ion selective electrodes (ISE) Describtion Types of ion selective electrodes

o Glass membrane electrodeo Solid state membrane electrodeo Liquid membrane electrodeo Heterogenous membrane electrodeo Enzyme electrode

Determination of concentration of a metal ion using ISE Application of ISE Limitations

Electro chemical series Definition Significance(or) applications of electrochemical series

Potentiometer titrations Redox titration Precipitation titration

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Conductometric titrations Acid base titrations.

UNIT

IICORROSION AND CORROSION CONTROL

Introduction to corrosion and its types Chemical corrosion(dry corrosion)

o Pilling -Bedworth ruleo Mechanism of chemical corrosiono Corrosion by oxygeno Corrosion by hydrogeno Liquid metal corrosion

Electro chemical corrosion (wet corrosion)o Mechanism of electrochemical corrosiono Evolution of hydrogen typeo Absorption of oxygen typeo Difference between chemical corrosion

and electrochemical corrosion

types of electrochemical corrosion galvanic corrosion differential aeration(or) concentration cell corrosion

factors influencing the rate of corrosion nature of the metal nature of the environment

corrosion control control of corrosion by modifying the metal by cathodic protection

o sacrificial anodic protection methodo impressed current cathodic protection

method

by modifying the environment corrosion inhibitors

anodic inhibitors cathodic inhibitors vapour phase inhibitors

protective coatings types of protective coatings

paints constituents and their functions of a paint mechanism of drying of drying oil

metallic coatings hot dipping

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electroless plating electro plating anodization

UNITIII

FUELS AND COMBUSTION

Introduction, analysis of coal The proximate analysis

o Determination of moisture in coalo Determination of volatile matter in coalo Determination of ash in coalo Determination of fixed carbon

The ultimate analysiso Determination of carbon and hydrogen in coalo Determination of hydrogeno Determination of nitrogeno Determination of sulphur in coalo Determination of oxygen in coal

Metallurgical coke Characteristics of metallurgical coke Manufacture of metallurgical coke by Otto Hoffmanns

method

Petroleum of gasoline Processing and fractions Cracking catalytic cracking Knocking Octane number Cetane number

Synthetic petrol Bergius process (hydrogenation of coal) Fisher- Tropsch process

Gaseous fuels Water gas Producer gas Compressed natural gas ( CNG)

Liquefied petroleum gas (LPG) Biogas

Calorific value Units of calorific value Determination of calorific value Gross calorific value and net calorific value Theoretical calculations of calorific values Flue gas analysis: Orsats apparatus

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UNITIV

PHASE RULE AND ALLOYS

Introduction, explanation of terms involved

Phase Component Degree of freedom Phase diagram Phase rule

One component system Water system

Condensed phase rule Two component system

Simple eutectic systems (Binary alloys) Lead silver system

Construction phase diagram by thermal analysis Copper nickel alloy system

Alloys Purpose of making alloys Classification of alloys

Ferrous alloys Nichrome Stainless steel

Non ferrous alloys Brass Bronze

Heat treatment of steel Hardening (quenching) Tempering Annealing

UNITV

ANALYTICAL TECHNIQUES

Explanation of terms used in absorption spectra

Beers lamberts law Problems

UV and visible spectroscopy Principle Instrumentation (block diagram only) Problems

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Principles Instrumentation (block diagram only) Problems

Colorimetric estimation of few metal ions Estimation of iron

Flame photometry Principle Instrumentation (block diagram only) Estimation sodium by flame photometry

Atomic absorption spectroscopy Principle Instrumentation (block diagram only) Estimation of nickel by atomic absorption

spectroscopy.

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