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Minerals

A mineral hae...

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A mineral haematite (fe2o3) contains unwanted material called guage In addition to Fe2O3. If 5kg of the ore contains 2.78kg of iron, what is the percentage purity of Fe2O3

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Q. One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron is as follows:

F e_{2} O_{3} + 3 C O ⟶ 2 F e + 3 C O_{2}

1.64 \times 10^{3}

kg of Fe are obtained from

2.62 \times 10^{3}

F e_{2} O_{3}

. Assuming that the reaction goes to completion, what is the percent purity of

F e_{2} O_{3}

in the original sample (rounded to the nearest integer)?

Q. A 3 g sample of haematite (iron ore containing

F e_{2} O_{3}

) is dissolved in hydrochloric acid and the volume is made up to 250 mL. 25 mL of this solution was reduced with

S n C l_{2}

S n C l_{2}

was removed by extraction, and the residual solution needed 30 mL of 0.02 M acidified

K_{2} C r_{2} O_{7}

solution to reach equivalence point. Determine the mass percentage of

F e_{2} O_{3}

In the extraction of Iron from Haematite Fe₂O₃, the ore is calcinated before smelting – True or False?

In the extraction of Iron from Haematite Fe₂O₃, the ore is calcinated before ______ .

Q. In the preparation of iron from haematite

(F e_{2} O_{3})

by the reaction with carbon as given below:

F e_{2} O_{3} + C \to F e + C O_{2}

80 %

pure iron could be produced from

120 k g

90 %

F e_{2} O_{3}

?

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