Answer:
3.62 g of C are required
Explanation:
In order to determine the grams of C, in the reaction we have to define it:
Reactants are C and Fe₂O₃
The reaction is:
3C(s) + 2Fe₂O₃(g) → 4Fe(s) + 3CO₂(g) It is a redox reaction.
We convert the mass of the oxide to moles:
32.1 g . 1 mol/ 159.7g = 0.201 moles
In the reactant side we say:
2 moles of oxide need 3 moles of C to react
Therefore 0.201 moles of oxide must need (0.201 . 3) / 2 = 0.3015 moles of C
We convert the moles to mass → 0.3015 mol . 12 g / 1 mol = 3.62 g
