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Title: Study guide for Electrolysis
Description: eaning of electrolysis, basic terms in electrolysis, uses of electrolysis, and Faraday’s Laws of Electrolysis. A guide for beginners who want to understand the basics of electrolysis, and some terms in electrolysis.
Description: eaning of electrolysis, basic terms in electrolysis, uses of electrolysis, and Faraday’s Laws of Electrolysis. A guide for beginners who want to understand the basics of electrolysis, and some terms in electrolysis.
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ELECTROLYSIS
All the study materials the teacher gave me are too long, I hope this one isn’t like the others
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In this material, we shall explore the meaning of electrolysis, basic terms in electrolysis, uses of
electrolysis, and most importantly, Faraday’s Laws of Electrolysis
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Well, the plating of these materials are actually done by electrolysis
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In case that is too complex for you, here is a simpler
definition
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Compounds are usually broken down in this process, such
as when water is divided into hydrogen and oxygen gases
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Basic Terms in Electrolysis
1
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Electrolytes conduct electric current by movement of ions
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Electrodes: These are conductors in the form of wires, rods or plates through which an electric
currents enters or leaves the electrolyte
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Anode: This is the positive electrode which is joined to the positive terminal of the electric
supply
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Cathode: This is the negative electrode by which the currents enter the electrolyte
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5
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In an electrolytic cell, oxidation occurs at the anode (positive
electrode) and reduction at the cathode (negative electrode)
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Ionic Theory
The behavior of electrolytes in solution is explained by the ionic theory
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Examples of electrolytes include salts, acids, and
bases
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The solution conducts electricity due
to the movement of these free ions within it
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Furthermore, these ions are frequently exchanged or rearranged during chemical reactions in solutions
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The conductivity of solutions, acid-base behavior, and electrochemical reaction
processes are all better understood by the ionic theory
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Example of Electrolysis
A common example of electrolysis is the electrolysis of water
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The setup includes a
container of water with an added electrolyte (like sulfuric acid) to improve conductivity, two
electrodes (anode and cathode), and a power source
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Faraday’s First Law of Electrolysis
Faraday’s first law of electrolysis states that “The mass (M) of an element discharged during
electrolysis is directly proportional to the quantity (Q), passing through it”
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I
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Q = it
MαQ
M α it
M = zit
Where z = Electrochemical equivalent
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The minimum quantity of electricity required to liberate one mole of singly-charged
ions, like hydrogen or chloride ions is “96500 coulombs (C)”
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M+ + e- → M
A- → A + e1 Faraday = 1 mole of electron
Recall that one (1) mole of electron contains Avogadro’s Constant (6
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2
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4
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g
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Electroplating of one metal by another
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Preparation of certain important compounds, such as sodium hydroxide and sodium
trioxocarbonate (v)
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Electroplating
This is the method of coating the surface of one metal with another metal usually copper, silver,
chromium, nickel or gold by means of electrolysis for decoration or protection against corrosion
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Thus, in silver plating a spoon;
1
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2
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The electrolyte is the solution silver salt, usually a silver trioxonitrate (v) solution
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2
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4
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What is electrolysis and how does it work?
What are the main components required for an electrolysis setup?
What is the ionic theory?
Explain electroplating
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Summary
The above study guide on electrolysis is sure to get you started as a beginner on your journey in learning
about electrolysis, although it does not contain everything about electrolysis, it is a beginner friendly
guide
Title: Study guide for Electrolysis
Description: eaning of electrolysis, basic terms in electrolysis, uses of electrolysis, and Faraday’s Laws of Electrolysis. A guide for beginners who want to understand the basics of electrolysis, and some terms in electrolysis.
Description: eaning of electrolysis, basic terms in electrolysis, uses of electrolysis, and Faraday’s Laws of Electrolysis. A guide for beginners who want to understand the basics of electrolysis, and some terms in electrolysis.