IGCSE Chemistry 0620/21/O/N/21 Q6

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6 The equation for the reaction of iron(III) oxide with carbon monoxide is shown.

Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)

What is the maximum mass of iron that can be made from 480 g of iron(III) oxide?

A 56 g B 112 g C 168 g D 336 g

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Answer ( 1 )

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    2022-05-11T11:05:17+08:00
    This answer is edited.

    RMM of Fe2O3 = 160

    No. of moles of 480g iron(III) oxide = 480/160 = 3 mol

    Based on equation, 1 mol of Fe2O3 produces 2 mol of Fe. Hence, 3 mol of Fe2O3 produces 6 mol of Fe.

    Mass of 6 mol of Fe = 6 x 56 = 336g.

    Ans: D 336g

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