AQA Jan 2011 Paper 2 Q4

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do not write outside the box a pure manganese is extracted from the ore pyrolusite mno by reduction using carbon monoxide write an equation for the reduction of mno to manganese using carbon monoxide mark b impure manganese is extracted by reduction of mn o using powdered aluminium according to the following equation mn o al mn al o deduce the redox half equation for aluminium in this extraction process mark c copper can be extracted by the high temperature carbon reduction of copper ii oxide write an equation for this reaction mark d scrap iron is used in a low cost process to extract copper from aqueous solutions containing copper ii ions d i give one reason other than the cost of scrap iron why this method is low cost mark d ii write the simplest ionic equation for the reaction of iron with copper ii ions in aqueous solution mark turn over wmp jan chem

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