DEPARTMENT OF CHMISTRY
ENGINEERING CHEMISTRY-II
E-NOTES
, SYLLABUS
10ACH02 ENGINEERING CHEMISTRY – II
UNIT I ELECTRO CHEMISTRY
Electrochemical cells – reversible and irreversible cells – EMF – measurement of
EMF– electrode potential – Nernst equation (problems) – reference electrodes –
Standard Hydrogen electrode -Calomel electrode – Ion selective electrode - glass
electrode and measurement of pH – electrochemical series – significance –
potentiomettic titrations (redox - Fe²+vs dichromate and precipitation – A+vs. CI-)
and conductometric titration (acid-base – HCI vs. NaOH).
UNIT II CORROSION AND CORROSION CONTROL
Chemical corrosion – Pilling – Bedworth rule – electrochemical corrosion – types –
galvanic corrosion – differential aeration corrosion – factors influencing corrosion –
corrosion control – sacrificial anode and impressed cathode current methods –
corrosion inhibitors – protective coatings – paints – constituents and functions –
metallic coatings – Hot dipping(Zn)-electroplating (Au) and electrolysis Plating (Ni).
UNIT III FUELS AND COMBUSTION
Fuels-Types-Calorific value – Coal – proximate and ultimate analysis-metallurgical
coke – manufacture by Otto-Hoffmann method – Petroleum refining– cracking –
catalytic cracking methods-knocking – octane number and cetane number – synthetic
petrol – Fischer Tropsch and Bergius processes – Gaseous fuels- water gas, producer
gas, CNG and LPG. Flue gas analysis – Orsat method – theoretical air for combustion
(problems).
UNIT IV PHASE RULE AND ALLOYS
Statement and explanation of terms involved – one component system – water system
– condensed phase rule – construction of phase diagram by thermal analysis – simple
eutectic systems (lead-silver system only) – alloys – importance of ferrous alloys –
nichrome and stainless steel – heat treatment of steel, non-ferrous alloys – brass and
bronze.
UNIT VANALYTICAL TECHNIQUES
Beer-Lambert‟s law (problems) – UV-visible spectroscopy and IR spectroscopy –
principles – instrumentation (problem & block diagram only) – estimation of sodium
by flame photometry - atomic absorption spectroscopy- principle – instrumentation
(block diagram only) -estimation of nickel by AAS.
TEXT BOOKS:
1. “Engineering Chemistry” , P.C.Jain and Monica Jain, Dhanpat Rai Pub, Co.,
New Delhi (2002).
2. “A text book of Engineering Chemistry”, S.S.Dara S.Chand & Co.Ltd.,
New Delhi (2006).
REFERENCES:
1. “Engineering Chemistry” , B.Sivasankar , Tata McGraw-Hill Pub.Co.Ltd,
New Delhi (2008).
2. “Engineering Chemistry”, B.K.Sharma Krishna, Prakasan Media (P) Ltd.,
Meerut (2001).
*************
, UNIT I ELECTROCHEMISTRY
Electrochemical cells – reversible and irreversible cells – EMF – measurement of
EMF– electrode potential – Nernst equation (problems) – reference electrodes –
Standard Hydrogen electrode -Calomel electrode – Ion selective electrode - glass
electrode and measurement of pH – electrochemical series – significance –
potentiomettic titrations (redox - Fe²+vs dichromate and precipitation – A+vs. CI-)
and conductometric titration (acid-base – HCI vs. NaOH).
Contents:
Electrochemistry
1. Nernst Equation
2. Ion selective electrode
3. Emf series / electrochemical series
4. Conductometric Titrations
5. Potentiometric Titrations
6. Reference Electrode ( SHE)/ Normal Hydrogen Electrode (NHE)
7. Secondary Reference Electrode (Saturated Calomel Electrode (SCE)
8. Measurement of emf of a cell
Ion Selective Electrode:
ION SELECTIVE ELECTRODE
Definition Construction Principle Representation Working Advantages Disadvantages Applications
Definition
It is defined as the ability to respond only to the activity of a particular ion and
develop a potential.
Eg. Glass Electrode
Glass Electrode
Construction
It consists of thin walled glass bulb which have low melting point and high
electrical conductivity.
It contain a platinum wire in 0.1 M HCl
, Principle
A potential difference exists at the interface between glass (Na+ ions) and the
solution (H+ ions of solution). The magnitude of this difference of potential is given by
EG = E°G + 0.0591 log [ H+]
EG = E° G - 0.0591 log pH [ pH = -log [ H+] ]
Representation
Pt, 0.1M HCl/Glass
Working
Determination of pH of a solution using glass electrode
To determine the pH of a solution, the glass electrode is connected with the calomel
electrode.
From the emf, the pH of the solution can be calculated.
ECell = E Right - E left
= 0.2422- (E°G - 0.0591 pH)
ENGINEERING CHEMISTRY-II
E-NOTES
, SYLLABUS
10ACH02 ENGINEERING CHEMISTRY – II
UNIT I ELECTRO CHEMISTRY
Electrochemical cells – reversible and irreversible cells – EMF – measurement of
EMF– electrode potential – Nernst equation (problems) – reference electrodes –
Standard Hydrogen electrode -Calomel electrode – Ion selective electrode - glass
electrode and measurement of pH – electrochemical series – significance –
potentiomettic titrations (redox - Fe²+vs dichromate and precipitation – A+vs. CI-)
and conductometric titration (acid-base – HCI vs. NaOH).
UNIT II CORROSION AND CORROSION CONTROL
Chemical corrosion – Pilling – Bedworth rule – electrochemical corrosion – types –
galvanic corrosion – differential aeration corrosion – factors influencing corrosion –
corrosion control – sacrificial anode and impressed cathode current methods –
corrosion inhibitors – protective coatings – paints – constituents and functions –
metallic coatings – Hot dipping(Zn)-electroplating (Au) and electrolysis Plating (Ni).
UNIT III FUELS AND COMBUSTION
Fuels-Types-Calorific value – Coal – proximate and ultimate analysis-metallurgical
coke – manufacture by Otto-Hoffmann method – Petroleum refining– cracking –
catalytic cracking methods-knocking – octane number and cetane number – synthetic
petrol – Fischer Tropsch and Bergius processes – Gaseous fuels- water gas, producer
gas, CNG and LPG. Flue gas analysis – Orsat method – theoretical air for combustion
(problems).
UNIT IV PHASE RULE AND ALLOYS
Statement and explanation of terms involved – one component system – water system
– condensed phase rule – construction of phase diagram by thermal analysis – simple
eutectic systems (lead-silver system only) – alloys – importance of ferrous alloys –
nichrome and stainless steel – heat treatment of steel, non-ferrous alloys – brass and
bronze.
UNIT VANALYTICAL TECHNIQUES
Beer-Lambert‟s law (problems) – UV-visible spectroscopy and IR spectroscopy –
principles – instrumentation (problem & block diagram only) – estimation of sodium
by flame photometry - atomic absorption spectroscopy- principle – instrumentation
(block diagram only) -estimation of nickel by AAS.
TEXT BOOKS:
1. “Engineering Chemistry” , P.C.Jain and Monica Jain, Dhanpat Rai Pub, Co.,
New Delhi (2002).
2. “A text book of Engineering Chemistry”, S.S.Dara S.Chand & Co.Ltd.,
New Delhi (2006).
REFERENCES:
1. “Engineering Chemistry” , B.Sivasankar , Tata McGraw-Hill Pub.Co.Ltd,
New Delhi (2008).
2. “Engineering Chemistry”, B.K.Sharma Krishna, Prakasan Media (P) Ltd.,
Meerut (2001).
*************
, UNIT I ELECTROCHEMISTRY
Electrochemical cells – reversible and irreversible cells – EMF – measurement of
EMF– electrode potential – Nernst equation (problems) – reference electrodes –
Standard Hydrogen electrode -Calomel electrode – Ion selective electrode - glass
electrode and measurement of pH – electrochemical series – significance –
potentiomettic titrations (redox - Fe²+vs dichromate and precipitation – A+vs. CI-)
and conductometric titration (acid-base – HCI vs. NaOH).
Contents:
Electrochemistry
1. Nernst Equation
2. Ion selective electrode
3. Emf series / electrochemical series
4. Conductometric Titrations
5. Potentiometric Titrations
6. Reference Electrode ( SHE)/ Normal Hydrogen Electrode (NHE)
7. Secondary Reference Electrode (Saturated Calomel Electrode (SCE)
8. Measurement of emf of a cell
Ion Selective Electrode:
ION SELECTIVE ELECTRODE
Definition Construction Principle Representation Working Advantages Disadvantages Applications
Definition
It is defined as the ability to respond only to the activity of a particular ion and
develop a potential.
Eg. Glass Electrode
Glass Electrode
Construction
It consists of thin walled glass bulb which have low melting point and high
electrical conductivity.
It contain a platinum wire in 0.1 M HCl
, Principle
A potential difference exists at the interface between glass (Na+ ions) and the
solution (H+ ions of solution). The magnitude of this difference of potential is given by
EG = E°G + 0.0591 log [ H+]
EG = E° G - 0.0591 log pH [ pH = -log [ H+] ]
Representation
Pt, 0.1M HCl/Glass
Working
Determination of pH of a solution using glass electrode
To determine the pH of a solution, the glass electrode is connected with the calomel
electrode.
From the emf, the pH of the solution can be calculated.
ECell = E Right - E left
= 0.2422- (E°G - 0.0591 pH)
