Chemical reactions that involve the input or generation of electric currents are called electrochemical reactions. Such reactions are broadly classified into two categories:
- Production of chemical change by electrical energy, i.e., the phenomenon of electrolysis
- Conversion of chemical energy into electrical energy, i.e., the generation of electricity by spontaneous redox reactions.
Electricity can be produced when electrons move from one element to another in certain types of reactions (such as redox reactions). Typically, electrochemistry deals with the overall reactions when multiple redox reactions occur simultaneously, connected via some external electric current and a suitable electrolyte. In other words, electrochemistry is also concerned with chemical phenomena that involve charge separation (as seen commonly in liquids such as solutions). The dissociation of charge often involves charge transfer that occurs homogeneously or heterogeneously between different chemical species
What will i learn?
- Concept of electrochemistry, Redox reactions and redox titrations with calculations, Electrochemical cell, Electrode potential, eletrolysis, conductivity
- chemistry notes or book (if you have), exercise book, silent room for studying, scientific calculator
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1 | Definitions of oxidation and reduction
Preview 00:18:23
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2 | Oxidation state and its rules
00:11:16
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3 | Balancing redox reactions in acidic medium
00:19:06
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4 | Solved examples
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5 | Solved examples
00:22:30
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6 | Balancing redox reaction in basic medium
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7 | Common oxidizing and reducing agents and Behaviour of hydrogen peroxide
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8 | Introduction to redox titrations
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9 | Primary standard materials
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10, Potassium permanganate redox titration
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11 | Sodium thiosulphate and Potassium dichromate
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12 | Iodimetry and Iodometry titration
00:19:31
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13 | Solved examples - Redox titrations
00:08:52
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14 | Solved examples | Redox titrations
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15 | Solved examples | Redox titrations
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16 | Solved examples | Redox titrations
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17 | Solved examples | Redox titrations
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17 (b) | Concept of electrode potential
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18 | Standard electrode potential
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19 | Electrochemical cell
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20 | Construction of electrochemical cell
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21 | Working of the electrochemical cell
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21 | Working of the electrochemical cell
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22 | Cell notation / cell diagram
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23 | Measurement of electrode potentials
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24 | Calculations of standard electrode potential
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25 | Predicting the feasibility of the reaction
00:23:18
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26 | The Nernst equation and potential of an electrode
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27 | The Nernst equation and cell potential calculation
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28 | Calculation of equilibrium constant of the cell
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29 | Determination of pH of the electrochemical cell
00:20:22
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30| Concentration cell
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30| Concentration cell
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31 | Electrochemical series
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32 | Corrosion as an electrochemical process
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33 | Electrolysis
00:24:34
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34 | Mechanism of electrolysis
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35 | Ionic migration during electrolysis
00:17:33
Dr. Mlelwa
Dr. Mlelwa is an experienced online tutor in biology and chemistry from ordinary level to advanced level. His highest level of education is two years of doctor of medicine (MD) at Muhimbili university of Health and allied science in from Nov 2018 to Sept 2020. There after he failed to continue with Doctor of Medicine Studies due to several reasons which are out of scope of this description. He started online teaching since January 2020 in his YouTube channel (Dr.Mlelwa Lectures) by that time he was still a medical student dreaming to become one among the best tutor in medical studies, that's why he called the channel Dr. Mlelwa Lectures, comparing to Dr. Najeeb Lectures who was one of his role mode. His good performance, being the second best boy in advanced biology examinations national wise in 2018, made him one among most interesting online tutor, having influence to different students inside Tanzania as well as abroad.
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