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sergiy2304 [10]
4 years ago
13

Iron ore can be reduced to iron by the following reaction: Fe2O3(s) + 3H2(g) → 2Fe + 3H2O(l) (a) How many moles of Fe can be mad

e from 1.25 moles of Fe2O3? (b) How many moles of H2 are needed to make 3.75 moles of Fe? (c) If the reaction yields 12.50 moles of H2O, what mass of Fe2O3 was used
Chemistry
1 answer:
Vikki [24]4 years ago
4 0

Answer:

The answer to your question is:

a) 2.5 mol of Fe

b) 5.63 mol of H2

c) 672 g of Fe2O3

Explanation:

a)                           Fe₂O₃(s)  +  3H₂(g)  →  2Fe  +  3H₂O(l)

                            1 mol of  Fe₂O₃  -------------  2 mol of Fe

                            1.25 mol             -------------    x

                            x = (1.25 x 2) / 1

                            x = 2.5 mol of Fe

b)                            Fe₂O₃(s)  +  3H₂(g)  →  2Fe  +  3H₂O(l)

                                   3 moles of H2 ----------------  2 moles of Fe

                                   x                       ----------------   3.75 mol Fe

                                  x = (3.75 x 3) / 2

                                  x = 5.63 mol of H2

c)                         Fe₂O₃(s)  +  3H₂(g)  →  2Fe  +  3H₂O(l)

                           1 mol of Fe2O3  ------------------   3 moles of H2O

                           x                          ----------------  12.5 moles of H2O

                           x = (12.5 x 1) / 3

                           x = 4.2 moles of Fe2O3

MW Fe2O3 = (2 x 56) + (16 x 3)

                   = 112 + 48

                   = 160 g

                           160 g Fe2O3 -----------------  1 mol of Fe2O3

                             x                   -----------------   4.2 moles of Fe2O3

                            x = (4.2 x 160) / 1

                           x = 672 g of Fe2O3

         

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