c) A 0.7188 g of sample iron ore is dissolved in a solution. All iron is...

 

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c) A 0.7188 g of sample iron ore is dissolved in a solution. All iron is oxidized to Fe³+. The solution is filtered to remove solid matrix materials. The iron precipitate as Fe(OH)3XH₂O gel. The weighed solid precipitate of Fe₂O3 is collected and mass is 0.5634 g. Find the percentage by weight of iron in the sample. (5 marks) c) A 0.7188 g of sample iron ore is dissolved in a solution. All iron is oxidized to Fe³+. The solution is filtered to remove solid matrix materials. The iron precipitate as Fe(OH)3XH₂O gel. The weighed solid precipitate of Fe₂O3 is collected and mass is 0.5634 g. Find the percentage by weight of iron in the sample. (5 marks)

Answer rating: 100% (QA)

1 mole of Fe2O3 gives 2 moles of Fe Therefore 15969 g of Fe2O3 gives 25585 g o... View the full answer