Redox and Electrochemistry notes
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This Redox and Electrochemistry page gathers over 60 community-made notes on oxidation numbers, electrolysis, electrode potentials and cells. They offer school students material for revision and teachers ready-made material, with a smaller selection for university students. Browse the notes and choose a topic to start with.
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Chemistry: Further Redox: Standard Electrode Potential Standard Electrode (Redox) Potential Revision of Oxidation and ReductionThere are two very useful definitions of oxidation and reduction. One is in terms of loss or gain of electrons. The other is in terms of changes ...
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Electrolysis of Acidified Water To improve the conductivity of water, sulphuric acid is added. The electrolysis of water allows for water to be broken up into its 2 component gases, Hydrogen and Oxygen. The hydrolysis of water is carried out using a...
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Electrochemistry- The electrochemical series The The electrochemical series is defined as a list of elements in order of their standard electrode potentials. The series lists elements in order of their ability to be oxidised, ie their ability to lose elect...
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Electrolysis of Na2SO4 An electric current is passed through a dilute solution of Na2SO4 using platinum electrodes. Current is conducted through movement of ions. A few drops of universal indicator solution are added to the solution to indi...
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Batteries and Fuel Cells Electrochemical cells are used as batteries Batteries are types of electrochemical cells which provide the electricity we use to power things like watches and mobile phones. Some types of cell are rechargeable while o...
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🔹 Unit 1: Electrochemistry & Battrychemistry🔹 🔹 Electrochemistry : A branch of science that explores the connection between electrical current and chemical reactions, linking them together. - Looking ahead, 🧪Electrochemical cells are classified into two mai...
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Electrolysis ElectrolysisElectrolysis is the process by which ionic substances are broken down into simpler substances using electricity.During electrolysis, metals and gases may form at the electrodes. What is electrolysis? Ionic...
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Chapter 7 - Oxidation, reduction and redox reactions 7.1 - Oxidation and reduction 7.1 - Oxidation and reductionRedox reactions:-short for reduction-oxidation-if one reagent is reduced, it itself is an oxidising agentAlso called electron transfer reactions.-if a reagent...
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C6 Splitting up using electricity. Break down/ Decompose a substance made of ions into simpler substances. Substance broken down is called an ELECTRODE. Set up the electrical circuit for electrolysis with two...
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Electrode Potentials Electrochemical cells make electricityAn electrochemical cell can be made from two different metals dipped in salt solutions of their own ions and connected by a wire (an external circuit).There are always two reactio...
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Oxidation numbers The oxidation number of an atom is the charge that the atom appears to have when the electrons are distributed according to certain rules...RULES:-In free elements .e.g N2, each atom has an oxidation number of 0.The s...
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The Electrochemical Series The electrochemical series shows you what's reactive and what's not An electrochemical series is basically a list of standard electrode potentials for different electrochemical half-cells. They look like this: You can...
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Redox 6 Voltaic Cell VS Electrolytic Cell Operations of Electrolytic Cell * indicates difference from Voltaic Cell
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Redox 5 SHE = Standard Hydrogen Electrode Reference Electrode (since the potential of an electrode can NOT be measured by itself) = hydrogen The hydrogen electrode = 0V CONDITIONS FOR 0V: Temperature: 25˚C Pressure: 1 at...
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Chemistry - Electrolysis Electrolysis of compounds Metals conduct electricity because they have delocalised electrons which can move and carry a charge. Lysis - splitting, electro - electricity Electrolysis is the process of splitting up an i...
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Chapter 5 - analysing oxidants and reductants CHAPTER 5 - ANALYSING OXIDANTS AND REDUCTANTS oxidation involves a loss of electrons reduction involves a gain of electrons oxidation and reduction reactions occur simultaneously an oxidant causes oxidation and i...
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Redox TEST Revision What you need to know: Define oxidation-reduction (redox) reactions as electrons transfer processes Define oxidising/reducing agents Use rules for determining the oxidation number(state) of atoms Use oxidation n...
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Redox Reactions Redox is the term used for reactions which involve both reduction and oxidation. Oxidation is loss of electrons (OIL) Reduction is gain of electrons (RIG) Oxidising agents are reduced - they gain electrons. Reducing a...
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Electrochemistry-electrolysis Electrolysis is defined as the use of electricity to bring about a chemical reaction. This is brought about through the passing of a current through electrolytes. Electrolytes are substances which, when molten or diss...
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Electrolysis of Copper sulfate The electrolysis of CuSO4 is carried out using active copper electrodes. The Cu(2+) ions are the only ions in the reaction as SO4(2-) ions are very stable Copper is reduced at the cathode, following the reaction Cu(2+...
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Electrolysis of KI Electrolysis of KI is used to demonstrate the movement of ions in a chemical reaction. Electrolysis of an aqueous solution is carried out using inert platinum electrodes. When dissolved in solution, the potassium iodi...
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About redox and electrochemistry notes
GoConqr OriginalWhat the redox and electrochemistry notes cover
The notes range from oxidation and reduction to electrolysis and electrochemical cells. Oxidation numbers sets out rules, while Electrolysis introduces the process. Other notes look at acidified water, sodium sulfate, electroplating, batteries and fuel cells.
For a starting point, read Oxidation numbers if you want to revise the rules, or Electrolysis for an introduction to that topic. The notes on standard electrode potential move on to electrochemical cells and thermodynamic feasibility.
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Which note is a useful place to start?
Start with Oxidation numbers if you want to revise the rules for assigning oxidation numbers. For an introduction to the other main strand, Electrolysis describes the process and what can form at the electrodes. Both offer a starting point before you move on to a more specific topic.
What topics do the notes cover?
The notes cover oxidation and reduction, oxidation numbers, electrolysis and electrochemical cells. You can also find notes on electrode potentials, the electrochemical series, electroplating, batteries and fuel cells. Some focus on particular examples, including the electrolysis of acidified water and sodium sulfate.
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