Factors affecting the rate of corrosion – Polarization, Galvanization, Tining

Factors affecting the rate of corrosion Position in the galvanic series: Extent of corrosion depends on the position of metal in emf or galvanic series Zn (E0 =-0.76) corrodes faster than Ni(E0=-0.23) Metals above H2 in emf series get corroded vigorously The more active metal(or higher up in the series) suffers corrosion when two metals …

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Corrosion – Types of Corrosion, Factors affecting rate of corrosion, Area Effect, Corrosion Control & More

Corrosion: Destruction or deterioration of metals by surrounding environment through electrochemical process.Eg: rusting of iron, Green scales formed on copper plates. Electrochemical theory of corrosion:Corrosion can be best explained by taking rusting of iron as an Eg: When a metal like iron is expose to the environment, according to electro chemical theory the following changes …

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Lithium-ion battery (Li-ion Battery) – Principles, Construction, Working etc.,

Li-ion batteries are secondary batteries.1. The battery consists of an anode of Lithium, dissolved as ions, into a carbon.2. The cathode material is made up from Lithium liberating compounds, typically the three electro-active oxide materials,3. Lithium Cobalt-oxide (LiCo )4. Lithium Manganese-oxide (LiMn2 )5. Lithium Nickel-oxide (LiNi) Principle1. During the charge and discharge processes, lithium ions …

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Batteries and super capacitors – Introduction to batteries, charging and discharging, characteristics of batteries, types

BATTERY: Is a device, consisting of two or more galvanic cells connected in series or in parallel or both, that can store chemical energy in the form of actins materials and on demand convert chemical energy into electrical energy. SIZE: from cubic centimeter to cubic decimeter.USES: digital watches, cameras, cars, emergency lighting etc. BASIC CONCEPTS:-The …

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CONVERSION AND STORAGE OF ELECTROCHEMICAL ENERGY: ELECTRODE POTENTIAL AND CELLS

Conversion and Storage of Electrochemical energy: Electrode potential and Cells. An electrochemical cell is a device, which is used to convert chemical energy into electrical energy andvise versa.These electrochemical cells are classified into two types as follows.1) Galvanic or Voltaic cells: These are the electrochemical cells, which converts chemical energy intoelectrical energy.Ex. Daniel cell, Dry …

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PROBLEMS ON BOMB CALORIMETER and BOUYS CALORIMETER WITH SOLUTION/ANSWERS

Before solving the Problems on Bomb Calorimeter and Bouys Calorimeter, have a minute and please checkout the formulaes, derivations on all types of Reformation of Petroleum and also checkout Chemical Energy sources. Problems on BOMB CALORIMETER PROBLEM 1: Calculate calorific value coal samples from the following data.Mass of the coal = 1g.Water equivalent of calorimeter …

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Reformation of petroleum – All four types of reactions

Reformation It is a process of bringing structural modifications in the strait chain hydrocarbons (with lower octane number) to increase the octane number and thereby improving the anti-knocking characteristics of petrol. It’s a process of upgrading the octane number of petrol fraction is called as reformation. By reformation high-octane petrol is obtained. If the Reformation …

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chemical energy sources – Fuel, Classification of fuels, Calorific Value

Topics to be covered (chemical energy sources) – Introduction to energy, Fuels-definition, classification, importance of hydrocarbon fuels, Calorific value-definition, Gross and Net calorific value, (SI units).Determination of calorific value of a solid/liquid fuel using Bomb calorimeter. Determination of calorific value of a gaseous fuel using Bouy’s calorimeter Petroleum cracking Fluidized catalytic cracking, Reformation of petrol. …

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