Calculate the percentage of pure iron in 10 Kg of iron (III) oxide [ Fe2O3] of 80 % purity. [3]
[ Fe = 56, O = 16]
Answers
Answered by
1
Answer:
ferric oxide e.g Fe3O4
in 10kg iron ore Fe3O4 contain 10x 80/100 = 8kg
now,
1mole of Fe3O4 contain 3 mole of Fe
now,
no of mole of Fe3O4=8000g/(56 x 3+16 x 4) = 8000/232 =34.5
so, no of mole of Fe =3 x 34.5
=103.5 mole
we know ,
mole =weight/molecular weight
103.5 = weight/56
weight =103.5 x 56 g =5796 g =5.796 kg (approx )
Hope this helps u!<3
Similar questions