Chemistry STPM Sem 2 - Chapter 2 Electrochemistry & Electrolysis

8 Electrochemistry	Candidates should be able to:
8.1 Half-cell and redox equations	(a) explain the redox processes and cell diagram (cell notation) of the Daniell cell; (b) construct redox equations.
8.2 Standard electrode potential	(a) describe the standard hydrogen electrode; (b) use the standard hydrogen electrode to determine standard electrode potential (standard reduction potential), E0; (c) calculate the standard cell potential using the Eo values, and write the redox equations; (d) predict the stability of aqueous ions from Eº values; (e) predict the power of oxidising and reducing agents from Eº values; (f) predict the feasibility of a reaction from value and from the combination of various electrode potentials: spontaneous
8.3 Non-standard cell potentials	(a) calculate the non-standard cell potential,   Ecell, of a cell using the Nernst equation.
8.4 Fuel cells	(a) describe the importance of the development of more efficient batteries for electric cars in terms of smaller size, lower mass and higher voltage, as exemplified by hydrogen-oxygen fuel cell.
8.5 Electrolysis	(a) compare the principles of electrolytic cell to electrochemical cell; (b) predict the products formed during electrolysis; (c) state the Faraday’s first and second laws of electrolysis; (d) state the relationship between the Faraday constant, the Avogadro constant and the electronic charge; (e) calculate the quantity of electricity used, the mass of material and/o
8.6 Applications of electrochemistry	(a) explain the principles of electrochemistry in the process and prevention of corrosion (rusting of iron); (b) describe the extraction of aluminium by electrolysis, and state the advantages of recycling aluminium; (c) describe the process of anodisation of aluminium to resist corrosion; (d) describe the diaphragm cell in the manufacture of chlorine from brine; (e) describe the treatment of industrial effluent by electrolysis to remove Ni2+, Cr3+ and Cd2+; (f) describe the electroplating of coated plastics.

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