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State Le Châtelier’s principle.
(2006)
Select one of the manufacturing processes below and answer the questions which follow
A blast furnace may be used in the extraction of iron from iron ore
A solution of sodium thiosulfate was prepared by weighing out a certain mass of crystalline sodium thiosulfate (Na2S2O3.5H2O) on a clock glass, dissolving it in deionised water and making the solution up carefully to 500 cm3 in a volumetric flask
(2007)
A sample of ethanoic acid (CH3COOH) was prepared by the oxidation of ethanol using the apparatus shown. The reaction is exothermic and is represented by the following equation:
