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IB Chemistry Topic 9 Redox processes Topic 92 Electrochemical cells SL
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IB Chemistry Topic 9 Redox processes Topic 9.2 Electrochemical cells SL • How to differentiate between galvanic and volatic cells. How draw the different cells and determine the products and voltage. • PPTs and quizzes can be viewed on www.mrwengibchemistry.com • 0:18 Comparing galvanic/volatic and electrolytic cells • 1:26 Drawing a voltaic cell diagram • 3:00 Predicting the products in a voltaic cell • 3:41 Drawing an electrolytic cell diagram • 5:21 Testing for conductivity • 5:32 Predicting the products in an electrolytic cell • 9.2 Electrochemical cells SL • Voltaic (Galvanic) cells: • • Voltaic cells convert energy from spontaneous, exothermic chemical processes to electrical energy. • • Oxidation occurs at the anode (negative electrode) and reduction occurs at the cathode (positive electrode) in a voltaic cell. • Electrolytic cells: • • Electrolytic cells convert electrical energy to chemical energy, by bringing about non-spontaneous processes. • • Oxidation occurs at the anode (positive electrode) and reduction occurs at the cathode (negative electrode) in an electrolytic cell. • • Construction and annotation of both types of electrochemical cells. • • Explanation of how a redox reaction is used to produce electricity in a voltaic cell and how current is conducted in an electrolytic cell. • • Distinction between electron and ion flow in both electrochemical cells. • • Performance of laboratory experiments involving a typical voltaic cell using two metal/metal-ion half-cells. • • Deduction of the products of the electrolysis of a molten salt. • Connect with me: • Facebook: / ibchemistry2016
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